I wouldn't be so quick to get a game like Blockland on mobile. Too many buttons.
The only thing I would like for iPhone related to Blockland is an RTB app that lets you browse blf, chat on RTB, and install add-ons to your RTB account remote and have them be used when you start up Blockland on your computer.
Doesn't seem like too much of a challenge. I'd actually pay $2.99 for it.