I’ll throw some support behind Rhys DeAnno’s “Heart of Stall” concept.
Evidenced by many of the posts in the recent OU/Gen VI threads, a resurgence of stall/defensive playing is a highly desired thing right now (and therefore interesting to the users CAP wants to attract). Weather control/elimination is also a hot topic right now, and would an essential element to discuss in any new pokemon. With this in mind, I’d be interested in seeing how stall fares in regards to each weather. Can we make a poke to make sun stall viable, or boost hail stall, without pushing rain stall over the edge (already more abusers in Vaporeon, Tentacruel, etc)? Or, can we make one solid enough that weather isn’t necessary? Stall is such an underused strategy in the current OU metagame that an investigation into its effectiveness can prove very worthwhile.
In a similar vein, I’m also interested in Yilx's idea “The Big Dipper”, henceforth known as John Mellancamp (http://www.youtube.com/watch?v=PErUiAyVoGc
). The idea of a new breed of wallbreaker without simply adding to the arms race strikes me as a good thing. An in-depth look at the viability of the arsenal of non-damaging moves we have available to us, and the stats/abilities/typing required to make them viable could open up opportunities to use these moves in new ways on established pokemon.