I must say that on my initial answer I overlooked that there were 5 players & Hero seeing the flop.

I agree that min raising is rarely good. However, here with Hero's late action I could see that villain (MP2) would push with AA/KK and maybe QQ if we min raise. Furthermore, he might committ himself to the pot if he calls out min-raise. The problem with this is the other opps:
- BB: we cannot be worried about him, he is not likely to fold;
- CO & BU: these are the problem. If you raise to $75 you cut their odds and they'll fold almost everything. However, as their stack is of about $100, IF they are average/tight, they would call the min-raise the slightly the same hands as a raise to $75 (as MP2 might still push). IF my reasoning is correct we could question whether we should not raise to $75 instead if they call slightly with the same hands. I would say no, because here we want MP2 to push on top of our raise and stack him, we are not targetting CO and BU.