just asking, I have plans to submit some Blazblue CT sprites here, but the graphic resolution of these sprites are too BIG, but I can submit some HUD rips if you want some. And one more thing, there are no Blazblue CT sprite sheets as of now, so may I?
Actually, the size doesn't really matter too much for that stuff. You may opt to have all the frames in separate images or on a sheet, but put them in a .zip/.rar archive. Unless of course its the size that's preventing you from getting the sprites at all. As for HUD rips, that's fine too.
Not sure why you thought there might be an issue with that, but than there aren't a lot of current gen console games on TSR. Regardless, its fine to submit for the game if you like as long as you follow the standard guidelines in the submissions forum.