>>19721995i posted my arena idea in several threads already
but im happy you want to hear it again
after you have defeated all frontier brains with this gold badge you get your own arena for customisation
you could put furniture from secret bases or others in there
pop in some teleporters and the usual stuff you find in arenas
have like up to three floors to customise
build your own maze
have up to 10 trainers with the same pokemon type put in there
maybe you have trained their pokemon yourself
at the end your team is waiting for others
which of course consist of one type
after you are finished you have to go through your arena to make sure it is possible to defeat
other people can as soon as they have reached the frontier go into the arena and randomly download arenas from others and battle them
if they manage to defeat your team they get bp
if they dont you get bp
or gf could make up to 8 gyms
you have to earn your title as a gym leader
after that you have to advance through the ranks until you are the 8th gym leader
also you would get more place or stuff to put into your arena, or the pokemon you could use can then have a higher level