I've got the first three.
The PvE is fun for a little while but the main meat of the game is in the PvP, which they absolutely butchered. Just as it was getting balanced, they released Factions, and with that still not settled, they released Nightfall. After that, the game went from unbalanced to unplayable, and a huge portion of the PvP community, including myself, quit. I think nowadays a few have gone back, but it's nowhere near the level it was at before.
Such a shame.