I don't think we will ever see a change in the bag limits in our lifetime. What we have now, is what it will be. Even if the state had firm data proving deer numbers were down, I seriously doubt they would change the bag limits.
The reason, is because for every hunter proving deer numbers are down, there is another stating their numbers are just way too high for their land to support. The got deer dying from famine and their bucks aren't reaching their 155 inch potential because the does are eating all the food!!! - sarcasm.
I only know a few people that kill more than 3 does a year. The problem is 200k people killing 1 or 2 each, so going to a 3 doe limit wouldn't really have an impact towards improving total reproduction numbers on most leases.