My prediction for Yishun take over will be..
800/804/806/811/812/860:Mixture of Citaros and B9TLs.
803/805:Citaros.
850E/851:Mixture of A22s and A95s.
50 SG Citaros,20 A22s,40 B9TLs and 10 A95s.
Yio Chu Kang and Ang Mo Kio no need to guess what models.
Just give the winning bidder (if it is a new firm) the remaining
BSEP E500s (along with some of the 5xxx rego ones if not enough).
The A95s can fill their slots, especially at WLDEP.