random ideas that my mind came up with

siren bard support role
"delays" things like damage or status effects
confuses or allures enemies

they can delay damage, where the damage only renders one turn later, and this damage can stack

on allies, it makes them live "longer", on enemies, it makes them take a sudden burst of damage

i might post some random other ideas
you can too

Not a pc gimmick, but: gelationous cube launcher. It launches gelationous cubes. The cubes, when they hit a player, absorb the player and carry them long with it. It's really good for defense, especially in hallways. If you're doing really high level, you can get a beholder to use its petrification ray on a cube with a pc inside. The geltious cube, having pretty much no dex, fails the saving throw, and the pc is encased in stone. A dispell magic removes the petrification, but it is still rather inconvenient.

In reply to NarveniAnagmu (msg # 2):

This right here deserves an entry in the Book of Wondrous Inventions. Or Dwarf Fortress.

I thought(in dungeons and dragons)"hey, how come monsters challenge rating goes up to 30, but players can only go up to level 20?" i fixed that problem. i spent weeks on it, but i finally made every class in the players handbook go up to level 30... my brain cells almost died 30 times, but at least im still here. also, i made a Sharpshooter class. focuses on ranged weaponry, when shooting something projectile-y, can either sset the projectile on fire, encase it in ice, or inbue it with lightning. The fire burns the target for several turns(the damage for each of these is leveled!), the ice freezes the target partially, reducing their speed by 20 until they take a turn where they dont move, and the shock stuns the target for a round. i know. its a bit too op. but then again, im the guy who came up with the Archmage class, where at 20th level, the guy has 3 9th level spell slots... call me crazy, but its interesting.

SKYRIM TIPS AND TRICKS:
skill improvements FAST: summon creature using conjuration spell, sneak behind them, and kill them. it improves your sneak, bot your conjuration. you can also do this with any follower; they wont die.
ALTERATION: get a necklace, chestplate, ring, and helmet with FORTIFY ALTERATION 25%, and you can telekenisis something, and WHILE YOU STILL HOLD IT, go to fast travel somewhere else. levels and gets your alteration to 100.
ENCHANTMENT GLITCH: go to the alchemy table with fortify restoration ingredients(eg: Abecean Longfin, Cyrodilic Spadetail, Salt pile, Small antlers, or small pearl) and craft a fortify restoration potion. drink it, and take your armor that has the enchantments you want to increase OFF, then go out of menu, put it back on and repeat the prossess. dont do it too many times or it will crash your game.(try doing a fortufy alchemy enchantment first; it pays off).
DUPLICATION GLITCH: get a follower to wait at the gates inside whiterun, drop what you want to dupe(item only; no weapon or armor) and drop it ONE AT A TIME(wont work if you drop bulk) then say"i need you to do something, make them pick the items up, go out of whiterun, go back in, and the items should be in your followers inventory AND on the floor.
using these and others, i am level 250, with my smithing, heavy armor, sneak, lockpicking, speech, alteration, and enchanting at 100. i have legendaryed my alchemy 100 times, my smithing 14 times, my sneak 4 times, my speech 13 times, and my alteration 24 times.
With my DragonBone mace, i do this much damage: 162587072(thats 162 million) because of my armor enchants. my sneak is increased by 10989%, so if i sneak, nothing can see me(i can run into people while sneaking and they wont do a thing). and my lockpicking is increased by 91738%, so i can pick any lock first try.
Im too OP. help.

btw, gone 365 in-game days, and only slept 1 HOUR IN THE ENTIRE GAME!!!
lol i have SUPREME INSOMNIA...

also, responding to NarveniAnagmu(message #2)
Bro... thats some very mean thinking there... please, if im ever in one of your campains... please... for the love of Hades, DONT EVER USE THAT ON ME. k now i need to go take a long, cold shower... ti get the stench of fear off me... my cats looking at me like a piece of chicken... gatta runn...