Nut Flush Draw in Small Pot

I'll limp with Axs to try to get a draw to the nut flush. Frequently the pot will be small on the flop, with say 1 other limper. Even though the odds are way short on the flop, does it make sense to call a pot sized bet from someone representing top pair when 2 of your suit flop? I think that it might, given that you could be looking at a pot that is 20x larger than the flop.

Example, you have $400, Villain has $400, pot is $12 on flop, Villain bets $12, you have nut flush draw. Given that you could be up against a worse flush draw, it seems like you can take the flop call as a big dog and still be profitable by the river.

Thoughts?