Due to some ham fisted bodgery, I think I have killed my Whyte Saxon Cross frame (I mounted a rack on the back using P clips, and I didn’t notice that the leg of the rack was rubbing on the seat stay and now have gouge out of the frame which doesn’t fill me with confidence – particularly since I was planning on the doing the 3 peaks on it).

So, need to replace the frame, the obvious contender is the Kinesis Crosslight. Requirements are:
Disc compatible
Rack mountable (properly and carefully this time!)

Will be used for 3 Peaks some commuting and a bit of touring.

Already checked out Planet X/ On One, Dirty Disco has no rack mounts and Uncle John has a canti fork.

What else should I consider?

Just get the crosslight, I love my Pro6.

Crosslights are really good ,mines old now from 2007 but it still rides nicely

Crosslight pro 6 they really are that good. Had 3 crosslights a Lynskey pro cross and an Sworks tricross.