Thanks for all the replies so far
GODOT looks like something I should take a closer look upon. Especially their scene hierarchy and their live shader editor approach.
At some point I need to look at Unreal as well, but guess I'll try that at some game jam in the future. And no for now pricing doesn't matter (I'm not a company owner (or well technically I am.. but working by contract)). And yes I've heard a lot of great things about Unreal, but right now I'm not looking for the next best thing, I'm looking for something different than the Unity workflow (not said that Unreal doesn't provide that).
And yes creating stuff from scratch is also fun, I've mainly done networking and graphics. Only problem is that I end up creating my own pipeline, and I would much rather see new structures, that I wouldn't be able to come up with myself.