Okay, here are my responses to some of the new abilities suggested:
I'm changing my opinion of this ability after reading Jas and Menace's comments. I have realised that this could just lead to a new venusaur, and though that is obviously not what the people that want chlorophyll intend, I think it will be quite difficult to stop. All it needs is a decent attacking stat and it can sweep with a choice band.
Essentially, I don't like this for the same reason I don't like chlorophyll. Instead of speed, it bumps up attack. With a decent attack stat, it could sweep with a choice scarf.
Water Absorb/Storm Drain:
This idea I am kinda iffy about. Out of these 2 choices, I am certainly leaning towards water absorb. I feel like our CAP could benefit a lot more from healing than it old from a sp. attack boost, especially since its most likely going to be a physical attacker. The reason I am unsure about these abilities is because it makes me question whether we actually need something to tank water with all these grassmon that benefit from sunshine. Especially since our CAP already has a resistance to water, I don't think it needs an immunity.
I was a bit unsure about these 2 abilities at first, but I began to see potential behind them. While I feel that Natural Cure is completely outclassed by Harvest, I can understand why some people want it. While not under sun, the CAPmon will not be significantly weakened, and though it is supporting sun teams, it can still function without them. Regenerator is a great idea and would be my second pick for an ability behind Harvest. It adds scouting utility, and a way to easily restore health without fearing the opponents attack taking away the HP you just healed.
This is an interesting Idea, but I fear that it could be used with rain teams as well as against it. Also, when sun is up, it increases the accuracy of hurricane which could threaten our CAPmon if they have Tornadus or Volcarona. It also increases the power of the foes water attacks, and decreases the power of our fire attacks.
I think this is quite a good idea. Having more defence against ice is required if this is going to be a successful rain stopper. Whether its through moves, abilities or stat spread, the problem of ice beam needs to be addressed. And I also think it is a nice bonus to have a little more resistance to fire, considering it seems to be our greatest check for our CAPmon at this point in time.
the abilities I see viable for this CAPmon are (in order of preference):
3. Thick Fat