My course is aimed for beginners, although it could also suit intermediates who are not confident with Japanese grammar. The aim of course is to give students a good foundation in Japanese grammar for conversation, and highlight the differences from English grammar.
You can always check the Course Content tab on my page to see if the topics would be of use to you: https://www.udemy.com/japanese-conversation-for-english-speakers
I am currently in the process of creating section 2 (also focused on conversation), which is for intermediate students.
Also, it's worth noting that udemy has a 30 day refund policy, so you could always get a refund if you feel the course is too basic for your needs.