Hmm...was Bradman actually a great captain from a tactical perspective, or did he just represent the epitome of 'leading by example'? I've always been a tad curious.But you are not some1 averaging near 100 in test cricket, attaining great successes as a test captain 'and a great role model'...right?
I can't really talk much about Shane Warne as a captain, but from what I have seen (i.e - YouTube highlights of the 1998/99 CUB series), he did come up with some pretty nifty moves. It's really hard to tell whether he would've been a good Test captain based on that and the IPL (which I admittedly have not watched that much of) alone, though. It's a possibility; no more.