Will there also be Brazilian puzzles in the future?
I like both Brazilian and Russian draughts and like to train tactics in both.

Probably there will also be Brazilian puzzles, although this is not a priority right now. Many of the Russian puzzles are also valid Brazilian puzzles. This has the advantage that it is easier to get a Brazilian puzzle set started. But a disadvantage is that this would give a lot of overlap in the puzzle sets, which makes it less fun if you want to practice both variants. So not sure about that one yet.