What does "hopefully minimizing harm" mean? like, only maiming instead of outright killing?
It means that you've modified it so that it doesn't kill the subject. Normally this is supposed to be done on a corpse, and it injects toxic chemicals that liquify the target's insides like a spider's venom, making the extraction faster.
What kind of 'unpredictable results' are we talking here? simple level of harm to the target, or like, could cause mana explosions or turn frogs into fairies or some shit?
You haven't tested it, you don't know. It could be something minor, it could do nothing, it could tear a hole in reality and summon super-cthulhu and his maids. The least one is less likely, but you won't know until you try.
does the mana shield recharge the suit's batteries, or just the shield itself? (dev thinks it charges the shield itself only,. in which case, fuck it, I want something else)
It charges the shield itself. Did you think I would let you power your batteries infinitely off of people casting at you?
Why didn't our ancestors breed magical creatures instead of exterminating them?
Because Arcane Beasts don't reproduce.
Did each world we visit have one type of magical creature, or several?
Several.
Why is our initial reaction to the only humans ever to have mana "kill them, take their blood?" This seems out of character for a civilization that accepts tribal people. It also seems counterintuitive for a civilization who is heavily reliant on such a resource - discovering the (apparently) first renewable source of it, to start out by murder. Please note that you have already approved an item that absorbs mana from a source other than blood.
Do you think you understand how this fantasy space civilization thinks? And no, I haven't.
Did we get dropped that close to the most technologically advanced, powerful city on the planet, for a blood harvesting operation? Wouldn't it make more sense t odrop us, like, literally anywhere else? Especially some distant village cut off from it's neighbors?
That is indeed exactly what happened. You didn't drop near the city.
How much arcana does a nonmage on this world yield, if killed and drained fully? How much does a mage yield in the same way?
How much is needed to power the ship out of system? How many people would need harvested?
I don't have numbers for these, nor do I need them. Nonmages yield the same amount as mages, but don't provide mech upgrades. Each person is worth substantially more than 100, and the amount needed to power the ship is in entirely different units; it's not worth trying to compare them.
I'd like an official GM response to each question, even if that answer is "That's secret."
What you'd like is not always what I'll give you. This is why RTD has a GM and dice, unlike the FG&RP freeform games.