Those proposals seem reasonable to me, with the caveat that if there were long-term members who would be adversely impacted by those changes on other sections of the site where they have periodically participated in the past (such as Coupon Connection), that consideration be given to keeping them eligible for those sections if they so request. Not so much for the person with an average of 1000 OMNI and 10 Coupon Connection posts per year for the last 2 years, but for the hypothetical person with 10 OMNI, 20 travel, and 5 Coupon Connection posts per annum of the last 5 years. And I realize that OMNI may not count for Coupon Connection eligibility, so that I am using it only as an example for any areas of the site which may be restricted based in part on post counts.
I would also be in favor of the proposals if the second one grandfathered in people only for a limited period, say 1 year.