I am making this thread more under the hopes that a developer will see this but if anybody has any ideas to add in the comments below that would be awesome.
These are just some thoughts I had that might make this game feel a little more like an Elder Scrolls game and give a little more freedom in the character creation section of the game.
One thing I have felt since release is that you can be to tied into a certain class just for one skill or skill line from it. My thoughts on opening this up a bit is to keep the classes that exist for those that are new or like them, but for those of us who want a little more freedom from the classes add a fifth class in, instead of having a preset group of three skills lines like the other classes, give us the option to choose our three skills lines by mix and matching from all the existing class skill lines. So an example would be maybe two skills lines from DK and one from NB, or one from NB one from Templar and one from Sorcerer, etc.
This both keeps the current class structure but allows for more customization of your characters class if you have another build you want to try.
Another aspect I would like to see added is an attribute system as opposed to the Health/Magicka/Stamina options now available, closer to all the Elder Scrolls games before Skyrim. This I understand would be a much larger restructure and much longer and harder addition then just adding a new customizable class but I still believe would be a welcome addition.
The last thing I would like to add address is the Destruction and Healing skill lines, I believe it would be a nice addition to allow those skills to be used while a staff is not equipped. While not changing the skill line and keeping all passives that give bonuses to the staves themselves it would make a welcome addition to be able to use those magic lines with just the skills while other weapons are equipped to allow the non mages a little more versatility.
As I said at the beginning I am making this thread in the hopes that a developer will see it and be inspired but please if you have any thoughts or additions add them in the comments.