1script - 4:59 pm on Apr 12, 2013 (gmt 0)
I should have checked my WMT account before posting the previous message. Looks like G approved another RR I sent for another old site with almost the same circumstances. Actually, it was in an even worse shape because it had known "inorganic links" problem, long since fixed.
This time there was a visit from a reviewer. All they looked at was the homepage, got the 301, came to the new site and also only saw the homepage. What can you see by looking at the homepage only - beats me - but, as goodroi pointed out, they are overworked, so what can you expect? ;-)
So, my success rate is now solidly stuck at 50/50