As the match director, I saw only good stuff from the rule changes. I think all really enjoyed the 7 rounds in the mag.
No on DQed for the Model 12 as far as I know. If anyone knows otherwise, please let me know.
As for tactical reloads, everyone I saw try it either got a P or had a miss on the sixth or seventh round. Having practiced it quite a lot before and after the rule change, I can say my split times are not affected very much.
Thanks for asking!
Boggus