That's a problem with you not being good at the game in general. That's a reason for difficulty settings, not a case for keeping in a badly overpowered skill.
I admit that the game is very challenging right now, and I do have to think and plan carefully to deal with large fights, and I have to be cautious and know when to use healing items, and pick what buffs/debuffs I should use, and I get it wrong a lot of the time.
I know that, but I am not in the mood to calculate every figth!
I want to use pickpocketing, crafting, lore, repair and lockpicking also and not use all the points for fighing....
If there are not some powerfull spells, there is no fun in fighting.
You like challenges? So don't use arrowspay!!!
But let some powerful spells in the game, for those people who like to be powerfull or maybe overpowered.
I have no problem to be a powerful wizzard, who can use sword and bow also very good and waer a good suit of metal armour! And I have no problem with 4 of such superheros!
I like to talk with the People, open chest, find good treasurys and sometime to figth an easy fight!

You can't do this only with an easy button! That would mean, that the arrowspray use 5 arrows in hard mode and 100 arrow in soft mode! How should the larians make this?