It's easy to keep up with if you stick with it, I'd wager. But as someone who's been out for a couple years now it's less about going in with ~perfect knowledge like in the past and more about making as good a decision as you can in the moment. Don't need to know all the neutral items, just need to read the three they give me and pick my favorite for the situation.

Idk, I honestly love the direction they've been taking. Feels like the meta becomes slower to solve each time they expand things and there's so much room to play casually now it's kind fun. Like these facets give, in some cases, completely different ways of playing some of these heroes and that's incredibly cool.

I just started playing again a couple months ago. Read the abilities on your favorite 1-3 heroes, test the ability in the demo if it's something completely new. And then just hop into all pick and play. You'll learn everything again faster than you think

Imo, it's not important to memorize everything. Every patch changes something (sometimes something small like here armor adjustment on something). The general game play loop has never changed. Be aware of the map, get last hits/denies, work with team, play and build for your role/position, be cognitive of your positioning, etc.