Given that it's going to be a rushed MMO I'm not so sure.
If the MMO is TES, it'll be hardly rushed. Zenimax has been working on it for over 4 years now.
Yes, I will be preordering the next TES, be it a singleplayer Bethesda RPG, an MMO from Zenimax Online, or just about anything else. I've had a great time with Skyrim, and Oblivion and Morrowind, so I see no reason not to.