My opinion on the battle frontier
Screw this place. As someone who likes competitive Pokémon I'd rather play the sword and shield singles meta with dynamax allowed than ever call this place good.
Every battle is either laughably easy or you get cheesed by enormous bullshit like OHKO moves,evasion or crits and at higher win streaks (like around 20+) they love to spam Pokémon that force you to switch out your lead and spam Pokémon that hard counter your team alongside cheesing you with OHKO moves, evasion or crits
And to anyone who says skill issue I got gold print on all the generation 4 battle frontiers. Yes I did it in both platinum and heart gold. I Also got the 100 battle tower win streak YES I'M THAT STUBBORN
Here's an example my heart gold battle frontier team was starmie,tyranitar and garchomp. Ice punch,brick break,night slash weavile was in over half the teams I fought. And don't get me started on fog spam in battle arcade or the amount of luck reliant fights on battle hall and the less I talk about the garbage teams I got at battle factory the better.