They supposedly have some Su-25s, perhaps not many, there's some footage around from the early days of the conflict but numbers now are a bit vague.
I think that we should give the UKAF both planes if they want them.
Agreed, as you say the A-10 is very capable at what it was built to do but I suspect any pilot with any sense really wouldn't want to go far beyond the forward line of own troops in one.
F-16 (possibly) won't be as good as the A-10 at Close Air Support but has more flexibility and is certainly more multi-role.
I guess in an ideal world the UkAF would like lots of both, but that comes at a cost (financial possibly and certainly in the amount of support needed)..and may be if it's a case of just one type then the F-16 would make sense.....
Anyhow it's still all more than a bit speculative, I suspect there's quite a lot of smoke and mirrors in some of the blogs and MSM pieces...it'll be interesting to see what get delivered at some point.