How many different skills, hotkeys, can you use in PoE?
D3:s six skills only was a huge disappointment for me, always thought it was fun to have a huge array of skills binded to hotkeys ready to use. In D2 for example it wasn't that uncommon, with skills granted from items to use up all 15 skill hotkeys. Gave lots of room to spice things up when you where killing mobs. So instead of just spamming amp damage and dim vision you could use terror, attract, decrep, lower resist and so on. Kept things interesting.
I would imagine from the looks of it though that PoE is designed to be like D3, meaning fewer hotkeys?
Looks like there is alot of theorycrafting in the game though so guess that would make up for it somewhat.
8 total: 3 for your mouse then 5 assigned to Q-T (which I'm sure can be remapped but I haven't bothered).
A lot of the other customization comes from support gems and such not just in where you assign skills.
You've obviously not tried it. It's free and open beta (stress test) ends today I believe. Might as well give it a shot.