Right...you would have...a min raise there from me polarizes my range...more so to the strong side. You probably would have folded to an all-in with AQ in that situation as well. But there's a reason for that. You're not a bad player.
A bad player doesn't see that. They just see "I have 75 to call a big pot of $400 and I have a queen, I have to call." or "I have 2 diamonds, I have to call." They aren't even giving any consideration as to what you have and they usually see an all in as a big sign of strength. Don't under estimate the power the words "All In" has on players at the table. Stations will call off nearly or all of their entire stack chasing a draw and leave just a few dollars behind then reluctantly call the river with their last $30 in a $400 pot or even flat out fold with $30 behind if they miss their draw and reload. (Though I don't think reloading is an option in this situation).
I think you're thinking too much about what a good player would do in that situation. If UTG raises and UTG +1 3bets...most decent players will see that as someone in that position having a good hand and will tighten their range, but instead we have 5 callers which tells me there's a lot of drawing hands out there and these guys like to call.
All in all, there's not really a bad move here. Just want to milk the value for what I can. I like this thread...good luck.