I’m questioning where people are pulling these extra points out of their butt from. I’ll often leave them at lvl 1 with their extra abilities unlocked because I don’t have the points to invest more than 1 into them. Most of the builds I made realistically used 4 slots. Since using the base abilities was often completely useless without at least 1 of their other ability slots unlocked.
Did that specifically so I could have higher damage multipliers on my abilities unless a legendary amplified it in some way. My Rogue could kill the entire screen and it didn’t matter how many enemies on the screen there were. That was 3 abilities. 3 combo points, Imbue, and shoot.
The game flat out tells you how it wants you to build the characters. Choose 1 skill you like from each category. Basic Ability, Into Core Ability are non cooldown basic rotation skills you use to kill stuff. Then you get a defensive or utility skill. Then you get a third damage ability or skill. Then a second defensive or utility skill. Into the ultimate.
You could skip categories in favor of other categories or investing more into your core or damaging skills, but that’s how everyone’s builds should have looked. This doesn’t really give you room to use more than 6 abilities in. Some enemies in this game can 1 shot you if you stand slightly in the wrong place at the wrong time.
This game has more passive effects than Diablo 2 does. So you don’t really need more than 6 slots. The game is balanced that way because utility skills in this game are not 1 point wonders. They are massively overpowered boss killing abilities you pop to kill them. They are 3 point wonders.
Cross class abilities outside of passive effects are probably not going to be a thing. They aren’t a well thought or fun system in Diablo 2 either. It was literally added in Diablo 2 to stop the babies from complaining about the Sorceress Teleport and Telekinesis. People repurposed it for all it is worth by using the massively overpowered barbarian buffs with it. It’s use stops at buffs. The only skill I’ve seen people get fun out of was Whirlwind because it’s the most fun skill to use in the game.
Diablo 4 is like Diablo 2 in every aspect of the game that matters. They diversified from stupid ideas like your entire inventory being filled with charms or needing a magical cube to craft for you. A cube that there is 1 of, but crafters in sanctuary always existed. You help one of them get the strongest hammer for crafting back in 2.
These are things the creators of Diablo 2 refused to put into their other games because they are not good ideas for the balance of their games. Torchlight kind of perfected the borrowed skill system by making a bunch of general skills any class can use. You could even spec into these general skills as any class. It just didn’t add much to the game over their class skills.
Diablo 4 was plenty of fun with the design they have now. I have builds now which is something Diablo 3 completely lacked. You have to spend resources for those skills so you don’t get every skill at 100% effectiveness upon unlocking. Staples of the genre.
This is one thing about Diablo 2 I’ll say. It’s expansion added a lot of good core content to the game, but for every good thing they added they added 2 nonsensical stupid ideas to the game along with them. I like the act and the new classes, but the game would have been better without any of the other additions.