I think I'd only go with Wrex and Eve together, Wrex is a bro, but he has a bit too much pride, and his opinion of other races is a bit on the dangerous side. Eve is great, but without support from someone like Wrex I doubt the can get the females to be more in charge, Wreav would mess up her work. With Wrex supporting Eve long enough for the females to take control under principles established by Eve, and with the ruins revealing more old Krogan history and helping their pride in that history, from before their self-induced nuclear fall, I think that the Krogan would be more able to adapt to Galactic society.
Unfortunately, in the long run, something may still be needed to control Krogan fertility, perhaps not as extreme as the Genophage, but they still breed too fast outside of their native environment. They either need to have learned self-control over such things comparable to the Salarians, or get a genophage variant that actually does the original purposes of reducing fertility, rather than causing freaky stillbirths and most Krogan being infertile (which encourages it to be bred out of a population as generations become more resistant anyway). Not sure how such things would go down. Either that, or you need virtually unlimited space for Krogan expansion without them taking over space of other races. Perhaps developments based on Quarian liveship technology to allow the Krogan to create an unlimited number of space-stations, or new terraforming technologies?