Terminal thing is on purpose, no fun in just waiting around at the terminal :D
And yeah, I'm already working on a more responsive character movement with better stamina implementation, will probably release an update later! But thansk for the feedback :)
I agree that the 30 mins training time is huge, but I dont really want the player to be able to level up their slave to max level within an hour, idk, might reduce the overall experience but decrease the training time, that way it rewards you if you're actually punishing the slave, I'll have to take a look :)
I would keep that idea, but it only works if there are other things the player can do. It might be a good idea to gradually or maybe proportionally scale the time as the game goes on and there are other things available. Your other idea to cut the time as reward for certain tasks is also pretty good honestly.