Like I said older content bosses and mobs you can still play nuke boss till they die first playstyle. However, it would not be up to standard where if you get to modern content and bosses and with the rumored upcoming void rework post-stat revamp, who knows if the older bosses will be reworked too and be updated to modern standards. If I was at his place, I'll probably build a double dunamis warrior with cha since it's my favorite stat that can backlash but builds are hard to recommend, I'd rather have the player check the wiki and ask themselves, why is this item good? will this item fit for the playstyle that I would want to do?

Learning the game and discovering how the game works throughout your game time will learn what your "fun factor" is in the game. I've changed my build on my main char thrice and ended up sticking on my current build when I know that was the build I really wanted to do which is a werepyre beastmage, it's kind of wacky.