woo im finally returning to FFXI after a very long hiatus. i started playing during the NA release on Siren server and quit a little before the CoP expansion, so i know i must be out of date on many many things.

so some back info i was a powerleveler like some NA's during the release and reached 74war and 73drk i also did some bcnm, nm camping (those guys that dropped the red gloves, sniper rings, etc), and was an alchemist and miner i dont know where i left off but i could make remedies and mine adamantite ore. so i'll start with my questions based on the background info i gave yall, any help would be appreciated.
1. How is the economy now adays? are you able to make money off of crafting? or NM farming? i heard something about a change to how things work to reduce RMTs can someone go into detail if at all possible.
2. I'm not sure if i read correctly but i also saw something about shops being cheaper than the ah? was there a change in the shop prices? or was this just the players opinion?
3. Are there any changes in the game that i should know of that would affect the general leveling process? finding XP's and grinding it out. I also heard something about soloing for exp (was there a new feature added to help people solo?)
4. I used to love tanking as war/nin while powerleveling, but i am thinking of picking up PLD. how is the pld nowadays? are they worthwhile tanks? viable in endgame? desired as MTs?
Thanks!!