Firstly let's state some obvious stuff:
Currently to apply for the position of BN you have to achieve a certain modding "activity" threshold, which is equal to about 4 mods per month over the course of 3 months (with some additional math behind it which allows for a tiny bit of flexibility).
"A mod" is counted whenever you get rewarded with at least 1 kudosu on your post on a mapset.
From what I know (correct me if I'm wrong) this is supposed to make sure that before the application is sent you've proven enough dedication over a period of time so that you do not completely die out of nowhere if you were to get into the position of a BN.
Due to how the current mod activity count works the 3 month requirement is just more of a hassle than a determinant of one's consistency with modding.
With only 1 kudosu needed per mapset to get a modding point per month, it is super easy to cheese your way around the system by downloading random maps from some modding queues and then just scanning them with Mapset Verifier to post very obvious stuff like missing tags, no combo colours, etc, etc. Basically, you can get a month's worth of activity in like 5 minutes, then just do it 2 more times and the requirement is fulfilled.
I think that with the activity requirement being pretty much a needless obstacle, it would not really hurt anyone to remove it completely. There are already rules in place to stop people from brainlessly applying without having too much idea about how modding works/spamming BN apps from multis (200/150 kds requirement).
Additionally, while applying for BN you have to provide from 2 to 4 high-quality mods that show the applicant's ability to mod different aspects of a map. I think it's safe to say that the application mods are usually much more polished than the "standard" ones, and getting these mods done is probably more of a "commitment test" than spending 15 minutes over the course of 3 months.
If removing the threshold completely would be too much then something like getting rid of it once someone has applied once could work as well I think.