Lord42 I think you are touching on one of the problems with how the game has developed over the years.
RIPs use to feel valuable as resources were not as abundant so not every mission was sent with enough RIPs for a 100% moon destruction chance, as I said earlier it is an unintended consequence of all the changes made over the years to the game and this is a massive over-correction that I have said I feel goes too far in attempting to address this.
IMO threeflipskat3r has the best suggestion of capping the % as it is with moon creation, the fact players are willing to risk 190 RIPs for a 100% moon destruction chance because the resources are peanuts to them is just a bit silly. This isn't the fault of any player, or 1 change to the game, but an accumulation of changes that have led to where we are now.
Rips are still valuable, to the players that plays freetoplay, the only ones this change affects. if someone who rips has not value to him decide to break your moos, he will do it in the same way
