My suggestion is to make the players use more often headbutts! because currently after players finish the story aint even touching the trees !!why i make that suggestion? Its because i think headbutt are pretty broken good but kinda underrated..   how to make people use them more often?? on top right there is a window with every pokemon per route-city-etc!! show there with a new specific symbol<like tree or idk> which pokemons can be encountered with headbutt so people will mostly use more the map than usual tasks! because many headbutts have pretty cool and rare pokemons!! Im waiting for ur asnwer Negative or possitive ! i think its a pretty good suggestion

-1, u made it here to the forum, so u can make it to https://wiki.pokemonrevolution.net and check the headbutt spawns for every route. 
many ppl tree hunt pokes on daily basis and get all the desired spawns from honey trees, if u think ppl don't touch trees after story u're simply mistaken