"Not everyone has time for mmo grinding"
if you did the grinding without the mmo part it would be unbalanced. Meaning you would level at same pace as solo grinding is now, plus the time of running around for solo quests.
It would take more time than mmo grinding.
"no mmorpg out there has the option to play part of it like a single player rpg really. "
"Every corporation does it."
there is a reason. Because to balance that out they would have to make multiplayer soloable.
try wow, you can play the whole game solo-able. fuuuuuuuun right? ^^
innovate your ass instead.