[JohnPreston]

I guess that depends on the stakes you're playing.

If you play micro-limits, IMO this could be profitable because you'll get enough action from non-observing players if you only play +EV hands (which would be very tight obv).

I believe to be successful in mid-stakes and higher, you have to do more than playing ABC poker, e.g. blind stealing, which wouldn't be possible if you only play +EV hands.

Also, will you also play post-flop strictly according to PI (pot odds, that is)? I guess then you'll never c-bet, which leaves a lot of small pots on the way...