Makes sense to me. I'm presently working on a system to help one observe the table, take the proper kinds of notes, and refine one's play for the players who are there, as well as the general table texture.

To begin: sit in in late position if you can, hit "wait for big blind", and jot down the name of anyone who raises PF in that round. You will need to keep doing this as you play, or the sample size will be too small, but you'll know forthwith who the aggs are. And you'll hopefully get to see what they raise with.

You also need a set of memorized, prepared adjustments that you make once you have a feel for the table. For example: if it's pretty Laggy, you'll be folding 66-22 in early position ... you don't want a raise behind with this stuff. If loose & passive, you can usually limp them etc.