Six skills is enough to have a wide mix of damage and healing. If you need more than that then you should really look into playing something less intense. For the most part you can just shove any random ass skill in there and get the job done because again it's a totally linear path of upgrades. You don't get a choice in if a character is a spell caster or a melee build or a healer. You have a short list handed to you and are told to pick all of them pretty much without any real effort.

Meanwhile, scaling the weapons is 1) not changing the build since the weapons don't actually change. You can't make the girl with the poker card into a sword build for instance, meaning it's mostly cosmetic because 2) the differences between the weapons range from "why would you need this" to "why would you even pick any other weapon." Especially since there's no "random drops." You unlock the same weapons at the same places every time.

E33 is a totally linear turn-based action-adventure game. It's not my cup of tea but mostly due to the story being agressively French in a way that made me instantly hate everyone in the cast to the point that by the time we're meeting a random as white dude with a beard who is distinct from the earlier random white dude with a beard in ways that would require a team of 30 reserchers spending months in rigious study to detirmine I honestly thought I bought the wrong game because I thought there was no way that huge swaths of people thought that this dreary borning mess was the greatest story ever told in gaming.

What E33 is not is a Role Playing Game. There is no role you play. Unless you count "boring ass European art students backpacking through a shitty LARP session" a role, in which case the game does a great job putting you into that role.