We need players for these matches and it's hard to get hold of them at this point, but players who are not needed by Dragons and Connacht are probably not going to manage much.

I can't imagine Cheika in a month of blue moons.

He was the Leinster coach for Bloodgate.
I don't think anyone has taken a defeat worse than when Quins won in Cardiff against Stade in 2011.
He's been on the record that he doesn't like coaching against clubs that he's previously managed (turned down the Reds for that very reason) and he's only just left England as his family are based in Oz.
As well as that, he's become a short term fixer, when we need someone with something resembling a medium term plan (maybe not 3 years, but I trust you know what I mean)

The 2 Kiwis have had plenty of write ups in other publications, so feel a bit more concrete. If Rennie gets an offer with The All Blacks, then he's obviously picking them.
Razor might be too expensive or have a desire for a break.

Easter and Mapletoft feels like Fissler's shilling for their agents/his sources, but I do worry it'll be someone uninspiring in that range with the way things are going.