[@PlatinumSkink] No, of course not :P I'm saying those without badges are given the easier Pokemon in a gym leader's team. You scale up by badge, not by Pokemon :D You did say that trainers all over Isson would be departing on their journey, in which case it makes absolutely no sense for a beginner trainer to go up against the eighth gym leader and get wiped; I don't think that's reasonable. Also, trainers who start off with impossibly powerful Pokemon (by some stroke of luck) would just annihilate the weaker gyms, which also doesn't make sense.

I just imagined a gym leader would use a team capable of taking on any skill level, that's all :3 For example, say you're a grass gym leader. You'd have a first evolution in the 10's, perhaps another almost at level 20, another at about 27, the fourth at level 30 something, the fifth at level 40 and then the last one at level 40-50. 

That way, you could take on both beginner and late blooming trainers, rather than getting your ass handed to you by level 40s XD 

Of course in the Minor league they'd be weaker than the leaders in the major league, but nonetheless I imagine both would try to scale for the sake of fairness :P

As for your second point, I agree wholeheartedly ^-^ Just saying I don't want to accidentally challenge the eighth gym and get one-shotted XD