I honestly wouldn't even bother having it do anything else in Brooklyn. As it is, it already has a decent run when traffic is good, but because we're talking about a route on Flatbush Avenue (with a small stint on Nostrand Avenue), things can easily turn sour. Sending it to another area with traffic issues (and one that is ill-equipped for turning buses, to boot) would pretty much kill it.
The route has three camps worth noting:
1. Brooklyn College
2. Floyd Bennett Field
3. Compensation for shortcomings of other routes (read: B41 and Q22, even before restructuring)