I think it would be EXTREMELY useful to have cheat sheets of all the conjugations and grammar rules presented in the grammar guide. Those summaries you make in the blue box, maybe with the heading of what its about and where to find it in the guide, all together on a series of cheat sheets would be an amazing tool for reminding yourself of grammar rules and such.
Also if you haven't learnt a conjugation or grammar point that you come across you can find it on the sheet and then look it up in the guide. I think it would be great! For example I saw one conjugation that I hadn't come across before, and I for the life of me couldn't figure out what it was called, so i spent ages going through all the pages of the grammar guide until i found it. I fi had these cheat sheets, it would have taken no time at all!