Teams based around weather are a lot of fun. I'm actually working on a sunny day team too, but it's also a gravity team, which is going to be really difficult to manage, but it helps to have a pokemon in mind for a team starting point, like I'm basing it around heatran. With gravity going, his base 120 power move magma storm becomes 100% accurate, and combining STAB and the sun, its power reaches a devastating 270, but if I can get his ability flash fire to activate, then it becomes a murderous 405. Throw in a choice scarf, and you got yourself the king of fire types blasting massive holes in even the most capable walls at ridiculous speeds. Of, course, that would take a minimum of 4 turns to activate, so that sun might not last long enough for a full power sweep, unless I don't use a choice scarf and teach heatran sunny day itself, sacrificing speed for the longevity of power... Oh, and I'm putting together a gravity team that isn't based on the sun. Just a regular gravity team, but still a very powerful one, one that I may replace my sandstorm team of the E4 with, which I might add, is also done. So what's the battle frontier like? It's a lot different from the emerald one I surmise.