It doesn't have Lessons like the Starter and Beginner ones, there is no Audio for the questions and I don't know half the vocabulary despite having completed Pre-Intermediate Words (N4) . Not to mention that the default setting of throwing 20 new Grammar concepts at you in a day is insane(I have reduced that obviously). I know Renshuu is working on making proper lessons like the Starter and Beginner schedules, however those obviously aren't finished yet.
Are there any other Grammar schedules for that level that can be recommended over this one? Should I switch to something like the Genki schedules and read the textbook in parallel?
Is there any way to see how much of the vocabulary used by a schedule I already have learned with Renshuu?is there a way to see what percentage of sentences used by a schedule have audio? A way to create a vocabulary schedule that contains all the words used by a Grammar schedule?
I think most of the grammar lessons are going to be pretty similar. My experience was at first it was a bit overwhelming that there was a lot of unknown vocab. But after a while I realized I didn't actually need to know what every word meant to do the grammar, as long as I could figure out what the words job was i.e. is it a person, place, object, verb, etc. If the word looks interesting and like something I would want to know, I use the + button and add it to my vocab schedule. Honestly, it gets easier and easier as you work through it.
Thanks for the info re: 20 new terms - that definitely should not be the default value.
As you noted, the materials for N4 are being made right now! It is a TON of grammar, so it will take longer to make than the previous, N5 ones.
There is not a way to do what you're asking (re: vocab and audio) - it's something I do manually as I create the schedule. So while I do not have a good answer for you yet, I promise that one is coming!