Glad you are asking and pointing this out. I have no problem to explain current situation. Though, you might be a little tired because I will probably repeat myself when talking about the past.
Currently we are having 6 Taiko BNs in our community which two of them are absent for a longer time until they finished their exam / semester. So in total we are left with 4 in the whole community. Additional to this, the TNA only contains 3 of these BNs, while one of them is just helping a bit out(tasuke). Having in mind that the queue regulates the number of accepted maps and new rounds by its number of active members, it should be obvious that we can't compensate a high amount of requests as we used to in previous months.
It's rather remarkable that the members were able to last until the last month without new BN additions. Normaly we expected it to happen sooner, so we have a balanced ration between BNs who work together and those who work by their own. In this way we can also exchange the BNs if they want, so they can switch from working alone to a group from time to time. That moment will be hopefully reached with the new BN addition. Currently with only 3(4) BNs left, it should be obvious that it is impossible to keep it up with or without a team like the TNA.
And now here comes the part you might be tired of: As I said a few times already, this regulation is still better compared to the old way we went - getting requests by mapper and never reply again + BNs being more than stressed.
Edit: Oh, now I see where you got the number of 8 members. But 3 of them are not BNs at all. And maybe we should announce when certain BNs are absent. So everyone is updated at least.