[Shaun]

Arthur - think he'd have been evicted when Joe was, because all of the nominees that week were pretty bland/inoffensive that week.
Kayleigh - would've been evicted around a similar time, perhaps saving Rebecca the week she went.
Lotan - I do think he'd have been evicted when Savannah was, but they'd have made it a double at that point to cut down on numbers and we'd probably have lost Isabelle if the campaign to save her by getting Lotan out was there instead of the single eviction.
Sukhvinder - Also would've been evicted relatively soon, but I like to think she'd have become a little more "in the right" with fans especially when tackling the likes of Kayleigh and Chanelle.

It's hard to say who'd have lasted longest because it would've meant the likes of Joe, Rebecca, Savannah perhaps being saved from eviction and changing the house dynamics, but I think Arthur would've survived the most evictions.

We also wouldn't have got Andrew/Sue/Simone/Sam.