>>58906113I mean I don't think it would really take much? The Gen 2 level curve feels a little wack but that's mostly because of all the gyms and trainers between the fifth and seventh badges all being around the same levels. Spread it out a little more so the player more comfortably ends up in the mid-40s/early 50s by the time they challenge the first champion or champion stand-in, and you're on the right track. From there it would just be a matter of structuring the other regions in such a way that enemy Pokemon progressively get stronger by ~20 levels per region, so by the time you reach the end of the last region, you have, and are fighting, level 100 Pokemon. Level curve handled.
As for boring players? That's the harder one. Would be a matter of stretching the main plot out across the regions, I guess. The gym challenges could be contained to each region, assuming gyms would be a part of a multi-region game at all, but the main story of the game could be continuous