1. PC since you can have no capped fps and can still use a controller.
2. Depends, most people prefer keyboard for faster macros and response time. Gamepad is just a preference if ur lazy

3. Entry = more characters you can make in any server. Standard membership = 1 character per server only (If I recall).
4. Game was fun on release but atm theres not alot of features (I quit about 3 months after release due to capped levels and gear).
5. Not atm i think.
6. You need to buy the retail game. You can't just torrent then pay subscriptions.
7. Not that I could think off, might be a few players that play on JP servers. Crystas are considered IRL currency so its illegal.
8. Theres no subscription cards yet if i'm sure.