I've been out to my usual areas quite a bit since the ice storm, and yes, it did drastically change everything. The trails I used to walk are covered with downed trees, tops, and limbs. I've had to detour around a lot of the worst spots. The worst are the areas with lots of alder and maple. The firs lost a lot of limbs and some tops but entire trees didn't come down. I was thinking the same thing, that this will increase the feed as a lot more sunlight will be getting in, and all the alders and maples that broke off and/or came down will be re-sprouting and providing lots of food for the blacktails.
It's a lot noiser now walking through some of these areas, with all the limbs laying on the ground. I'll be going in and clearing out some trails so I can get in and out quietly.