For me, a Pokemon land has to have:
1) an interactive walkthrough Pokemon Center faced by a ‘Nurse Joy’ and an animatronic Chansey, complete with a Pokemon ‘zoo’ of animatronics to show how they care for different Pokemon.
2) an immersive Pokemon battle ride/experience with lots of effects where you can see a classic Pokémon evolve to win a battle.
3) A milder, Pokémon Snap omnimover interactive type ride where you’ve ‘Gotta Catch ‘Em All!’, going through different areas to catch different types of Pokemon, eg Leaf, Water etc, each area with its own effects. And of course, the whole area themed like the towns from the Pokemon Map, Ash’s house etc.
They could do so much!