1. Have there been any changes in terms of network/heuristics and such following patch 1.66? Currently, game is on patch 1.72. And whether or not it is good to be used nowadays?
2. Does this work with both Legacy and recent Enhanced version released this year?

Asking because, on PC Enhanced (not sure about Legacy version) invite only sessions (at least jobs hosted from invite only) are breachable by cheaters.