I have just played a short session on Pokerstars to see if the new rule has made a difference to the games.
First off looking at the lobby it is clear the flop percentages have increased. Furthermore, as predicted by Pokerstars, the tables are less reg infested with an increase in players playing one table only. The games are also less aggressive with little 3/betting preflop. As such I was able to open my range utg to include baby pairs.
I think this change is a huge positive for the vast majority of players. At peak hours on a week day, typically a 2NL full ring game would contain 6/7 regs. Now it is just 2/3 solid players.