Replace Vancian system with Stamina system akin to how Health/Endurance work.
So... casting a spell depletes a resource that refills at the end of battle and a separate resource that refills on rest? Say... stamina and mana?
Exactamundo, but I wouldn't say Mana, let's go for something in more generic terms. Energy spent is energy spent, whether you're a mage or a fighter.
Could work, there would probably need to be talents or abilities that regenerated your per battle energy resource so characters don't become dead weight when they run low. It could certainly be balanced to limit the per battle power of vancian style casters, while still forcing you to conserve resources long term so you have them when you need them.
However if I understand the arguments correctly, this wouldn't prevent the tedium caused by misjudging your resources and needing to turn back before you hit the next rest stop. Never found this to be a problem personally, obviously you probably can't finish the endless paths in one go, but the rest of the game has plenty of camping supplies scattered around, even on PotD Trial of Iron I'm only finding myself turning back if I want the training grounds rest bonus for a boss fight, which is really a different issue.
Personally I'm for creating unique systems for every class, it's just that the more classes you have the harder this gets, and the harder it is to balance them. The per encounter classes in this game ended up being my least favorite, they're the classes I'd most like to see evolve; especially fighter, rogue, ranger, and barbarian. Like... having them receive some passive abilities automatically when they level, so you have more active abilities to choose from when you level, and end up with a class that doesn't just spend 90% of it's time auto attacking. Or maybe picking from a specialization path that automatically gives you specific passive abilities as you level up.
Anyways, it'd be ok to limit the per battle power of Vancian's in some way, like a fatigue system. But I fear that if Vancian's are found to be a problem, simpler solutions will come to pass. Solutions like cooldowns. I fear that PoE 2 will get dumbed down in a way that makes it a boring game. Look at Tyranny, cooldown based abilities, instant consumables (also use cooldowns), no friendly fire AoE spells, no classes....
Here's a thought, want to limit Vancian casters? Look at all their Foe AoE spells and change any that don't make sense as a Foe AoE into regular AoE. For example, the druid's "Twin stones". This spell is exploding rocks, how the heck do you explode rocks without hitting your team members... Or even make all or most AoE spells able to have friendly fire, to compensate for this slow down combat movement speed and resolutions a little bit, and implement a "stand your ground" button that automatically makes a character stand their ground without turning off their AI. Combat depth would get deeper than it is now, unfortunately I imagine it would be impossible to properly program the enemy AI to not kill their team members when using their AoE spells, or at least to have them work together to get the most use out of the spells.
Edited by Climhazzard, 22 August 2016 - 10:45 AM.