Well, this thing actually can work in the sun due to fast entry hazards and ability to absorb...erm...Water-type moves. Not that Anybody's gonna use Water-type moves in the sun though. Anyways, I think that's all our new cactus can do to have a niche in the ranks of Roserade and the other generic support Grass-types.
In this case, I think Marakacchi should just make due with an offensive set with Spikes like Roserade does. Poor thing can only rely on Ninetales and his meager stats to be viable.