I know you will probably be reluctant to listen, but at least please read what I’m about to say.
It is about current intervals for SRS. I think they are not optimal.
Currently, as stated in the FAQ: 4hrs, 8hrs, 24hrs, 2 days, 4 days, 8 days, 2 weeks, 1 month, 2 months, 4 months, and 6 months for finished
That is
1-5: 4hrs, 8hrs, 24hrs, 2 days, 4 days
6: 8 days
7: 2 weeks
8-12: 1 month, 2 months, 4 months, and 6 months for finished
And the problem lies in 6, 7 and 8th intervals. This is the time when the grammar point transitions from your current memory into your long term memory and there has to be more reviews in that period.
My experience is that when the 8th level review comes up - I no longer remember a lot of the grammar points. Unlike vocabulary, where you just link a concept with a word - for grammar there has to be more reviews.
Ideally there should be 15 reviews spread out across the same intervals (i.e. up to 6 months), but I understand that you are unlikely to add 3 new sentences for each of the grammar points, but please at least consider adjusting the existing intervals such that there are more reviews in the initial phase.
My suggestion would be:
4hrs, 8hrs, 24hrs, 2 days, 4 days, 7 days, 12 days, 20 days, 1 months, 3 months, and 6 months
As you can see, I didn’t touch initial intervals (they are perfect). But slightly moved the intervals in mid and late sections to put more emphasis on reviewing while you still practice a particular grammar point.
Please, I hope you can seriously consider this. I think it would significantly improve overall effectiveness of learning on BP.