>>269307914
Yes you're right, since it is in preview, things can break and you would need to ask questions just like with anything else, but this tech is production ready in 2020.1 version of Unity so by next year March you would be worry free, however you can already start working with it.

I just wanted to inform you that there's stuff around the corner that would make things run faster and point you to it so you can prepare in the future if you're taking this seriously.
I mean if you go the full ECS route you'll probably stand out a lot more than any other developer right now and you would be more experienced in it than most devs.

It doesn't hurt to learn how to script the old way, do exercises like that, but sooner or later Unity will force you to unlearn OOP, which is what I wanted to inform you about.

tl;dr unity wants to btfo unreal engine 4 as hard as possible in the performance department in the next 6 months.
check out https://catlikecoding.com/unity/tutorials/ for fun stuff