1. This is a really bad idea, would make island hopping incredible difficult for even 3 thors to manage. Done properly you can waste the thors time and this would make it impossible to be captured.
2. Instead of a mana system maybe make all skills Time CD based, this of course would be subject to balancing.
3. For probes? God no.
4. Thors already outrun probes in a straight line race, they only are able to outrun by doing manoeuvres within the terrain.