It would be great if all the cool options concerning strum styles and other features like there is available in 4/4 time were all available in 3/4 or 6/8 time also
Yes, you’re absolutely right. I think there will always be more available in 4/4 time, simply because there is a wider range of musical styles there verses 3/4 or 6/8 time. On the other hand, I realize I tend to neglect those time signatures a bit. 
I need to get the new mandolin chop’s rhythm accents working on 3/4 time, and I have some 3/4 swing rhythm patterns to add (like the syncopated “1 & _ & 3 _”). If there are any other specific styles you want to see, let me know!