I can understand reducing CV numbers to make games go faster, but reducing BB slots? The 20 BB slots fill up very quickly and often make up the first 20 ships that actually enter a GB room. Downsizing BB numbers wont make things go faster, you'll still have people waiting for 6 CVs before starting.
Doing this will increase waiting times, not decrease them. Event aside, there are limited CV players as it, and reducing BB numbers will increase the number of GB rooms open waiting for cvs.