Properly already been asked for
Any chance of increasing the completion limit from 3 to 5-10 [ Might pull in a few more $'s Dan ]
Seeing as most people (Not Everyone) usually pay to complete this mission seems odd that its limited.

It probably has something to do with the point that three, invincible, planets are more than enough for people who pay to win. Giving them THAT many Rifts would pretty much just make this two different games. One for people without money and one for people with. I have a feeling that this will happen about the time he lets Multi accounts come in.

i have also wondered at the reasoning behind the limit, and i agree that its to keep the playing field somewhat level.
this is one of the only games that seems to be trying to do that...
Aside from a few medals, and modules that benefit from being a specific race, you dont REALLY need GP to accomplish too many things.
and given the multiple ways of gaining FB credits, you can get quite a few GP from doing surveys, appdog, swagbucks, etc.. you can easily get those few things done as well.

Mento has what? 10-12 Natural Dysons and 150K+ AP/hr already? More Rifts would just ruin the game. I personally think it's fine as it is.