While it will be nice to not have to arrive before park opening, this will just mean the BGs are gone by 07:00:01 instead of 07:00:02. I would image there will be more people trying to get the first BGs now since they don't have to be in the park.
Until they can increase ride capacity (and improve reliability) moving the BG times won't do much.
We were there 2 weeks ago. Our first day at HS we got BG 39 at the 10am attempt. RotR was down for 90 minutes before noon. Our BG was called at 1:40pm. We made it inside and it broke down for another hour. It was 3:10 before we made it on. A week later, we went to HS with 3 other groups. Of the 4 groups of us trying for a BG at 10am and 2pm, only 1 group was able to get a BG.
j
I've read WDW recently installed plexiglass, allowing non-same party riders to share a ride vehicle. No more single rider sitting alone.