Dual magic have dual casting but heres the kicker turn all the skills in it into light and heavy attacks

Hear me out make each skill in dual cast have an instant and a charged instant is a simple press and release button the dual cast version of each skill will be a press and hold light a heavy attack and release to fire.

Make craftable runes that require glyphs from enchanting and kutas to upgrade. And fepending on thenrunes used can make fire frost shock runes but heres the kicker make it possible to combo fire/fire, fire/frost etc and the skills will change to reflect chosen runes

Skills
fire ball shoot a quick fire ball that does initial dmg and a burn dot. Now press and hold to charge up a fire ball that hits hard knocks down target and explodes into aoe dmg.

As far as dual element mixes id say make some skills fire the main rune and some the second offhand rune be included in any fully charged dual cast.






Next skill line

Dual 2 hander

Now i know it sounds crazy but make it a warrior brawler berserker fest skill line that is sluggish but hits like a truck have a huge whirlwind skill and specialize in defense breaks knock downs and high dmg bursts but have sluggish hits many games have had barbarians that can use 2 handers 1 handed or dial wield. Make it function like a sluggish defense crusher version of dw im sure the number crunchers will pick the idea apart.

Next idea

Crossbows basically the wrecking blow of bows
Make it have shorter range but faster attacks and heavy attacks or a channeled 3 bolt shot heavy like a lightning staff and a explosive and fire dmg shots for morphs instead of the bows poison based everything. Hell give it a combo bonus passive that ups crit rate for every fighters guild skill slotted.

Atronach summoning for pet build who hate sorcerer similar passives but different summons to spice up game have fire atro for magic dps morph into air atro for stamina dps

Ice and stone atro morphs for tanking and aggro pulling pets

And dremora summoning that gives you a dremora warrior pet and morph gives you 2 dremora pets that fight one magic one melee and stay out til they die then you ca resumon them

bare knuckle fighting would be cool. brings back oblivion memories.

but there comes a point where you give people too many options. and funnily enough, its a bad thing. ZOS need to balance having enough options, without having too many. and really, they are the only ones who can determine what that number is.

that doesnt mean not to throw ideas out there. your ideas may give them other ideas as well.