Something for the wishlist: Better balancing of skills.
Divine Divinity had problems - mostly with redundant skills (but with 96 skills in the game, they can't all be winners). Beyond Divinity had incredibly overcomplicated and specialized melee skills, and incredibly underpowered and over-priced magic skills.
Divinity 2: Ego Draconis was an improvement, and Dragon Knight Saga even more so, but there were still some balance problems.
Examples:
The Firewall skill was very unimpressive. Even with 15 points, it did a terrible amount of damage per second, and even accomplishing the dangerous and tricky feat of keeping enemies in the flames for all five seconds does literally 2 more than a single Level 15 Fireball tossed from maximum range. To top it off, Firewall's 30 second cooldown was double that of Fireball.
Splitting Arrows was crazily overpowered, if you follow good advice and build to maximize critical hits and critical hit damage - which Ranger builds steer you towards automatically. Add in +488% damage from Way of the Ranger, and you can do tens of thousands of damage spread over a room of enemies. The cooldown: 5 seconds.
Explosive Arrows were hit too hard with the Nerf bat when they were changed to no longer use normal damage from Ranged attacks. Even maxed it did maybe 500 damage with a non-critical hit. The only reason to invest is because it eats a second or two of the Splitting Arrow's cooldown time.
Life Leech made fighting a bit too easy, especially for Warriors who get a health regen buff from natural points into Strength. It worked with special attacks, and it was an instant heal - the only instant heal in the entire game. I think the biggest reason for it being overpowered was that it worked with special attacks, like Fatality (which could do up to 52% of an enemy's HP in damage) and Whirlwind (which could hit a lot of enemies around the player at once, that's a lot of life to leech).
Try and watch out for minor things like that.
There were some really good balance things, though, like how points into Strength and Intelligence didn't do much in ones or twos, but if you build up a big pile, the regen bonuses really started to shine.
I used to knock the Summon Ghost, before I understood it - it is quite effective as long as you put points in to keep it at maximum level, if it falls behind it dies quickly and the healing isn't as effective.
