I agree.
I have applied maybe 5 or 6 times in the past, but took a massive break from modding (and osu in general).
For my last few applications, I have seeked further NAT (QAT at the time) advice and have usually gotten either positive or neutral feedback with only one or two areas that needed improvement. (Most recently, I was told to mod maps with more complex concepts)
Now that I want to return and attempt to apply for BN again, the three month wait limit is moreso annoying than useful. I was most active before modding v2 and think I had about 600 individual mods (like wall text type mods that only granted one kudosu) before the switch. Yes, this isn't impressive especially compared to others, but as far as "will this person be active as a BN" goes I think it does show that I will have some commitment to the role.
Maybe if removing the threshold would put too much strain on evaluators, we could have an "exception" system that allows people above a specified kudosu count to bypass the threshold. Or, perhaps change the threshold to a # of mods instead of months of modding. (An example would be require 20 mods of activity for applying instead of three months of activity.)
The biggest argument against this would be that people could abuse the system and do a bunch of single suggestion mods. I don't think this would be a massive issue since only the mods people submit will be evaluated (unless an NAT wants to see more I guess) and people are able to abuse the current system as well.
I do think that time limits in-between applications are solid, however.