Out of that huge list I think these ones below would be interesting to watch or worth while putting in. To be honest looking at the list there is alot of rumoured ladies for the guys to watch but hardly any male eye candy for the ladies

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Laurence Llewelyn-Bowen
I think big brother would be just up his street & he would be quite humourous to watch...whether that is with him or at him I'm not sure. He would fit in well with the decor!
Jennifer Ellison
I think Jen would be quite fun and entertaining if she went in plus eye candy for the guys who watch. From seeing her on the celeb cooking prog she was really bubbley.
RuPaul
Didn't know who this was but googled it and he seems a poor substitue for Pete Burns.
Kevin Federline
I think we would all love to see what this guy is like, we have all heard plenty about him. I think he would be interesting to watch just to see what he says about Britney & others lol.
Sarah Harding
Again another bubbley blonde, she would be fun but I couldn't see Louis Walsh agreeing to her being on such a show...I could imagine her bringing the "good name" of girls aloud down...
Ruby Wax
I would love to see Ruby on this sort of show, she would be great fun and entertaining and also very much a loose cannon.
Noddy holder
Although I think he would be great entertainment I think he would grate on people...that is sometimes good in the house though.
Lucy pinder
Eye candy for the guys
Verne troyer
Didn't know the name but he would win the "box task" easily!
Mutya Buena
I think she could be quite a diva in there and be quite bitchy. Would be a good kick start to her going it solo.
Jack Ryder
A few years ago I would of said he was eye candy for the ladies.
Tara Reid
More eye candy for the guys if she went in..maybe she could also do what Jodie Marsh couldn't...win the public over.
Danielle Lloyd
Another one for the guys, didnt know she won miss england 2004 either.
David Schwimmer
Would love to see what he is like without his friends character tag.
Jon Ansell and Matt Steiff
Name wise I wouldn't know these were half of g4! Quite ashamed of that as I watched x factor lol. Jon could be some eye candy for the girls ...if you like the choir boy type.
Shilpa Shetty
Good to see someone who is different. I think she would be a good learning curve for everyone seeing a different type of celeb.
Lauren Harries
I think Lauren fits the weird and wacky side of big brother but I think she would grate very very easily..