>>50858886>Challenging the League EarlyOf course, challenging the Champion Straight off the 3rd badge will probably not go well for you. You're not able to transfer in pokemon before the post game, and traded pokemon will be disobedient, so you better be a REALLY stellar trainer or have some top tier cheese strat. If you beat the champion early, the rest of the game will acknowledge you as the Champion, with most of the NPCs being shocked someone so young managed to beat the champion without even getting all the badges. Additionally, the champion will be missing from any plot beats where they would've helped, so you've basically upped the difficulty immensely by getting the "win" early.
>The mountain range.The left and right portions of the larger main land is split by a mountain range with an incomplete route nearly connecting them. In the post game/DLC/Third Version, this path will be complete allowing for easy travel. Until then, your way of getting to the other side is use of a ferry in the city to the south of Gym 4 to get to Gym 6.
>Two Gym 7sWhen you beat Gym 6, players will naturally trek up towards Gym 8, only to be turned away by the Gym leader demanding you get the 7th badge first. From there, you need to find the secret paths to the Wild Ares, on which the 7th Gym has randomly been assigned to one of them. This encourages searching the wild areas pretty heavily and. There's also another hidden path in wild Area 2 that lets you skip the 8th gym if you think he's a prick. From there it's a straight shot to victory road and the Pokemon League
And that's how I'd make a game with a very atypical campaign structure, with tons of room for exploration and secret finding.