Tomic getting one would be interesting...let's face it, the chances are high that he will be a top player (top 100) within the next couple of years, so I don't think it is a bad thing to give him a chance. Besides, there are certainly one or two players in the draw that he might fancy his chances against.
As for Bolelli...not a worthwhile decision to reward him imo. He didn't perform particularly well at ATP level even when he was a top 50 player, and most are aware of his current situation now...he hasn't even performed well on the challenger circuit. Sure, there are a few players he could beat (e.g. Becker), but there are high chances that the draw won't work out in his favour.
In which case, if it comes down to a simple head-to-head with Tomic and Bolelli, I'd give a WC to the Aussie...future star in the making, and surely more marketable. If I recall correctly, Bolelli has moved to Monte Carlo (and most probably trains there), but that is a weak fact on which to base an application for a WC imo.
EDIT - it seems that Bolelli did get a WC. Eh well...