I did love playing it, it's a fantastic game and has SO much potential, it's the best MMORPG I've ever played (I HATE the generic cookie cutter mmorpg mechanics of WoW, Aion, Rift etc.). It's an entire open ended world where everything (and i mean everything) is left up to players.
The only reason I stopped playing was because I felt it was far too unpolished, there were many derpy/broken mechanics etc, and it really did lack anything for a lone player to do. I love the fact that you're released in the world and left to your own devices, but if MO is to ever get anywhere, it NEEDS a good hand-holding tutorial, not to teach them everything about the game, but to help new players get a grasp on what MO is and isn't, as well as provide some direction early on 'cause the beginning is the part where most potential new players will leave the game.
That said, if it does make a comeback, I'll definitely consider playing it again (I played for a few months after it came out of beta).
TL;DR
MO Developers need to make the game easier to transition to, so that it won't turn people off before they give it a chance, meaning more players, meaning more content. They need to stop focusing on new features for already addicted players and start focusing on getting more people addicted to their game. You can't have a game 100% focused on player content, with a severe lack of players. Upping their community should be #1 priority.