Have you all considered Swoobat yet? It's really dumb to inherit from... Normally, Swoobat's stuck with bad bulk trying to sweep with its speed... that's not an issue here. To give you an idea on how stupid giving Unaware (or Simple), recovery, boosting, AND status removal is, take a look at this set...
why (Cresselia) @ Leftovers [swoobat]
Ability: Unaware
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Calm Mind
- Roost
- Psyshock/Stored Power
- Psycho Shift/Shadow Ball/Heat Wave/Toxic
This is pretty much cancer incarnate, stopping everything that's not a Dark type or a veritable nuke dead in its tracks, boosts up, and wins. Psycho Shift stops status attempts dead, as well. And this is not the only one that can inherit well from Swoobat, either... pretty much any psychic type, along with some fire and even grass types can use Swoobat's movepool.
Am I entitled enough to request a suspect on this monster donator called Swoobat..? It's even worse than Pheromosa...
One thing. Like you said, everything not a dark type. This just shuts down this set, stopping everything it can possibly do as you are forced to switch or get slowly whittled down. Also, psycho shift does not stop status if the target already has it, so all you have to do is status cress twice with toxic, or use a steel type and be immune. possibly, resttalk and energy ball, air slash, or a hidden power could fix this, but you still could easily die to any strong nuke. In addition, you have no way to stop phasers with this set, so any phaser early in setup stops you in your tracks. Also, a single taunt will reduce you to whatever coverage move you choose, making it extremely easy to get whittled down. Also, cress has pretty much no attack power. Assuming HP fighting, aka the highest power non-stab coverage swoobat gives cress you do this much to chansey:
+6 0 SpA Cresselia Hidden Power Fighting vs. 4 HP / 252 SpD Eviolite Chansey: 138-164 (21.4 - 25.5%) -- 0.6% chance to 4HKO
Remember, that's at +6 SpA. Granted, it would just become a stalemate, but if chansey had taunt and an attaking move, it wouldn't be too hard to whittle cress down. Also, you could taunt, switch, then 2HKO with any nuker. Also, just to give an idea of how easy any nuker could kill cress 1v1 with taunt,
0 SpA Cresselia Hidden Power Fighting vs. 0 HP / 4 SpD Weavile: 156-188 (55.5 - 66.9%) -- guaranteed 2HKO
0 SpA Cresselia Hidden Power Fire vs. 0 HP / 0- SpD Pheromosa: 162-192 (57.2 - 67.8%) -- guaranteed 2HKO
0 SpA Cresselia Hidden Power Fire vs. 252 HP / 4 SpD Buzzwole: 112-134 (26.7 - 32%) -- 37.9% chance to 4HKO after Leftovers recovery
0 SpA Cresselia Hidden Power Fighting vs. 0 HP / 0 SpD Greninja-Ash: 90-108 (31.5 - 37.8%) -- 89.9% chance to 3HKO
0 SpA Cresselia Hidden Power Fighting vs. 0 HP / 0 SpD Magikarp: 106-125 (58.5 - 69%) -- guaranteed 2HKO
0 SpA Cresselia Hidden Power Fire vs. 0 HP / 0- SpD Deoxys-Attack: 118-139 (48.9 - 57.6%) -- 95.7% chance to 2HKO(I know he isn't legal, but I need to get across my point of how useless cress is after a taunt.)
Even against Magikarp, Pheromosa, and Deoxys-A, Cress running some of the better attacking moves, assuming she isn't something NVE like HP fighting against Phero, she cannot even guarentee a 2HKO against Deo-A. And there are many more just like these, many of which can one shot or at least 2 shot cress with their nukes. All that out of the way, I think swoobat as a donor isn't broken.