Some other ideas:
- 2 bar patterns would also be great. Many patterns repeat over 8 quarters.
- Allowing accents (dynamics). A lot of drum patterns involve just a few drums, where accents are what bring the pattern to life.
With accents and triplets, you can have the Purdie shuffle [1], which is one of my favorite patterns ever :)
:[1] https://tomtommag.com/wp-content/uploads/2011/10/Purdie-Shuf...