For the first one: I believe I was in favor of the change to keeper limits (if I was a voting member at the time). Based on seeing positive impressions by players, and it somewhat reducing the amount of pre-built teams, so it served it's purpose. I don't see reason to change this.
As for promotions.... I have yet to see 3 promotions on a roster or similar, but if it is a concern players hold I could see forcibly restricting to a single promotion per roster, or trying to restrict the number of promotions to match agm slots or some similar type of restriction.