I mean, maybe I'll raise something like 97s from button and the standard stupid NL50 fish will re-raise (and they practically only re-raise QQ+, AKs and maybe AQs so it's soo easy to know what he got) me from blinds, or maybe someone limping from UTG - it's perfect! I'll just take the call and know that if I hit good he'll put it all in regardless and I'll get a buy-in and if I miss I'll just fold to his c-bet.
I have to say.. it's not as great as you make it seem imo.. kinda depends on stack sizes and how much he 3bets, but you'll only flop a monster less than 5% of the time, and 2 pair is pretty vulnerable still vs overpair. Also what if you flop a draw (will happen more often than flopping big) - just fold or are you gonna put more money in the middle? If you pay for example $2 every time for a shot to win $8 more it's a losing play..