This is definitely long overdue. It will be interesting to see at what point cookies aren't so tasty anymore.
That said, I think it's entirely possible that certain players will see multiple 10% increases in salary before they start to become materially unpopular. It's not so much Joss because 10% for him is over $1.2 million which has a meaningful impact for lower cap leagues. Instead, it's the $3-5 million salary cookies who may still be popular even after 1-2 salary increases.
What I like even better is that as the dead ball pitchers become even more expensive and less likely to be used is that it will open up rosters to players who have strong normalized OBP/OPS for the cap level but can't be used effectively today because they hit more HR and proportionately fewer singles which doesn't work well against dead ball cookies. I'm a big Gene Tenace fan but it can be hard to use him because his BA/OBP/SLG are abysmal against dead ball pitchers. In the WIS Championship, I had '97 Bonds have a line something like .195/.265/.310 in a $110M cap league. Even in a slight pitchers park that shouldn't happen.
I've stayed away from lower caps for years because of cookie pitchers being able to shut down the power so easily and affordably. Also, I wonder if the strong pitchers from 1920-39 such as Vance, Grove, Gomez, and Hubbell will be used more often? There are some historically great seasons from these pitchers that don't work well in the sim because of the relative inability to shut down the long ball compared to the dead ball pitchers. Dynamic pricing should make them a more viable option.
And, I agree with a comment that I believe schwarze made earlier in terms of having player databases based on the date of the salary change. IMHO, once a league is set up with a league number then any owner who builds a team in that league should have the same salaries available to them.