I refer to the ZOS article where they talk about class changes: https://www.elderscrollsonline.com/en-gb/news/post/57025
I open this post to see what is missing, what should not be touched and to hear the opinions of the other players as well.
I state that i play all the four classes even though i am not an elite player i know the various skills that all classes use.

I begin by talking about the "non-class skill lines" i just say to be very careful with these skills because nerf them to much would affect something that I think "is part of the game and is part of the players' habits "so they are not only skills for fill gaps but they are part of the chosen role: tank, healer, DD.

Now I'll talk about power fantasy for the various classes and the various inevitable coincidences that can be found:

DK - Dragon Knight
This class should exploit the power of fire and earth, is it really so?
DK Tank: can forget about the power of fire and the famous Engulfing Flame skill and now focuses on the power of the earth, maybe some area skills are missing but go well;
DK Stamina: now they have modified the spam skill that uses the power of the earth but in principle it exploits the poison (coincidence with other roles);
DK Healer: has some interesting heal skills that use fire but can be improved, I don't use it but it doesn't seem like a famous healer class;
DK Magicka: class that uses the power of fire but with update 23 has completely lost its identity, to be definitely improved.

Warden
This class should use the power of nature (including frozen magic), of pets, is it really so?
Warden Tank: Exploit we say all the powers listed above, ZOS wants nerf the Polar Wind but I do not agree, perhaps what distinguishes this tank is just the group care;
Warden Stamina: use the pet this is sure and the poison, the poison is part of nature so ok;
Warden Magicka: even the magicka dd uses the pet, the spam skill is the same as the warden, magicka version, maybe this spam skill could work better, too slow.
Warden Healer: use nature to heal and class skills, it would have been nice to heal with frozen area skills but they don't exist, anyway is in the top 3 best healers in the game.

Necromancer:
They use the power of death, is it really so?
Necro Tank: it would have been nice to pull enemies with rotten meat but that's okay, slow yes but ok, the rest was done well;
Necro Stamina: uses the disease in the skills and the no death pet, have included the poison in the skills ... ok (coincidence with other roles);
Necro Magicka: looks like a warden, uses the fire, frozen and shock dmg, has lost the class spam, to be reviewed completely;
Necro Healer: few class skills because the class ones use corpse and are slow, already many healers are slow without the skills being slow, at the moment use the other skills more, not bad as healer anyway.

NB - Night Blade
Should use the power given by the shadow and all the martial powers given by the swords, daggers, etc., is it really so?
NB Tank: I do not use this class, but of what I saw is well balanced and the skills that it uses coincide with its role, at the moment it is very good in the tank role;
NB Stamina: uses the power of the blades and the shadow in the skills, but it has been too weakened, only the elite DDs manage to reach a good dps with this class at the moment, they should at least modify the skill surprice attack and give the major breach;
NB Healer: it does not seem to me to be the top healer, some care skills in the area that use the shadow could be modified;
NB Magicka: the skills reflect the class but too much confusion and too many dots, it should be simplified.

Templar
Should he use divine power, the power of light, is it really so?
Templar Tank: I don't use it but I always liked it as a class, I'm sure it's not bad but some class skills for this role need to be revised;
Templar Stamina: far from being good, it uses all non-class skills, I just hope they don't touch biting jabs in the next update;
Templar Healer: top healer thanks to shards but now ZOS seeks a general equality with all healers;
Templar Magicka: ok for the light skills but has lost its identity with the update 23, the solar barrage that described this class will be completely eliminated in the next update, even the blazing spear does not do so much damage, so it is no longer a magicka templar but only a magicka light that uses other skills + vampire's bane and radiant oppression.

Sorcerer
Class that should exploit all the powers that can be given by magic while maintaining its identity, is it really so?
Sorcerer Tank: I do not use this class but considered it interesting, maybe some skills can be changed but maybe it would be to strengthen this role too much ..., I don't know;
Sorcerer Stamina: they are trying to improve this role, with the next update there will be magic daggers to use with the Bound Armaments skill, but there is still a lot missing, for example a skill for regeneration of the stamina, at the moment in the build the Dark Deal skill is used Deal but slows rotation too much;
Sorcerer Magicka: the role without the pet is dead..and now they want to kill the role with pets too ... (why increase the cost in magicka of the pet?), a class that has lost its identity and who should improve this class does not particularly love the Crystal Fragments skill because it goes against the "pvp" ideas of ZOS, therefore spam skills and Mage's Fury gone, what will remain of this class?
Sorcerer Healer: now it's much better, thanks to the use of radiating regeneration.

In conclusion there is still so much to do and ZOS will surely make so many mistakes because it has this surface approach in fixing things, we hope well.
I await your opinions and those of ZOS, ciao