Voltano said:
This game will reward little or no experience to help with leveling up and customizing your character after combat, but will reward loot (procedural or predetermined?) that is meant to help with combat? And the player is meant to do tasks for X NPCs because they need XP?
The point is that it doesn't simply reward experience for killing lots of random mooks, but rather gives experience for actually doing meaningful things - exploring, finding secrets, completing quests, and so on. Beating a boss at the end of a dungeon or fighting your way out of an ambush might give experience, but you can't grind up your levels by just wandering around killing wolves and goblins. The idea is that you get experience for finishing meaningful encounters rather than just killing as much as you can, so you're encouraged to actually explore and play the game rather than look for opportunities to grind. For example, where Baldur's Gate might give you 100xp for killing a bear, PoE will give you 50xp for discovering the cave a bear lives in and another 50xp for acquiring the gem hidden at the back of its lair; whether you actually kill a bear or not is largely irrelevant - sneaking past it, putting it to sleep, finding a hidden back entrance or having a ranger befriend it could all give exactly the same result. In BG, even if you found a way around it you'd be objectively worse off if you decided not to kill the bear, in PoE, combat is just one possible way to solve an encounter (although there are still times where combat is the only choice).
It may not be for everyone - fans of MMOs and Final Fantasy-type games where grinding your character to a high enough level to tackle a particular area or boss is a large part of the game might not like it. But people who enjoy story and exploring more, and want to play around with different characters without being punished for, for example, being stealthy and not killing everything on their way past, will probably like it.