Well, main reason I have my Lapras around is to absorb any status--I normally get to set up on Blissey and things that attempt to induce status, buying me just enough turns to setup on them...
Toxicroak is a good option, but I've also considered Lucario, which fulfils both Jirachi's and Toxicroak's purposes, which are being able to setup and sweep, at the same time as taking a lot of different things.
Lapras is mainly for taking on Volt Switchers, as it survives--and uses its Cell Battery (yes, I use the strangest items, but it works) to raise its Attack, so that it can damage the incoming pokemon sufficiently...
Kingdra is mainly there to sweep, and I find that I can do things with it in most weathers, without setup.
Ludicolo was mainly there because I find that I can be highly unpredictable with it, but that's mainly about it--so he won't be on this team anymore...(Thanks for the advice there)
Jirachi & Toxicroak are getting replaced by a mixed Lucario, with a HP--although I don't know what to do with it. (For now it's Fire.)
What the other two members are, I'm still trying to figure out...