we've been though all the options already.
su-24 - not the right type of aircraft
su-34 - still not right
mig-23 still not right
any american aircraft - not Russian
we are looking at aircraft to replace the su-25 in the same role, as far as i know the yak-130 was looked at for being a CAS support aircraft but it has fewer hardpoints compared even though it is WAY faster, very good trait for strike aircraft in the same role as the su-25. the other option is the su-25M, but it doesn't have a electro-optical TV like the KM or the T. as well as not being in service.
km even has Double the FOV of the T. a HMD so the possibility of targets being marked with a piper. the box showing the point the TV is looking at can extend past the bounderys of the HUD
another quote
(wiki)
this means that it could have the white hot night mode of the mercury. something the T needed in a pod
(wiki)
this could also imply that it has better jamming capability
much better than the T
the wiki also goes on to mention that the KM will feature a Glass cockpit and multi-display panel. pin point accuracy and the like.
i'm sure a lot of the avionics will be replaced and improved up to the standards of the su-25SM. though it is not confirmed
if you have a better aircraft in mind please share it with us after you have read the entire thread