- Heavier and slower than the other two. More choppy too.
- Very important if you care about crafting, marginal otherwise. You can swap factions every 180 days or so, IIRC.
- Not required. But its a HUGE part of the game. You can just play the game as a crafting/exploration type of game. But the linear PVE portions end at some point in the base game. So like most other MMOs, you will likely be waiting for new linear PVE content after.