mg & 663366 pretty much sum it up, imo.

hand 1:
- weird turn lead when deep b/c if he raises (or ships) can you really fold? but some hands that you can get value from that you're ahead of are drawing super thin

hand 2:
- over limp with A7o pre is bad. its a shyt hand for a reason. calling pre is a leak ... and you're greatly over thinking your "positional edge" if you're using that to justify the call pre. A6o-A9o are pretty much some of the absolute worst hands in full ring, deepstack, NL... for a very good reason.
- bet/call flop is better
- winning players can and do limp SCs and less often mid PPs pre in EP (in certain game dynamics)
- as played, fold to 3b.

Just call the flop cr and let him try and barrel you off your hand. 3 betting flop shuts down his bluffs. Let him value town himself with 87 or barrel his T9 etc