Hi there. Sorry for the delay in response.
1. Correct. All of the primary cast will have routes (the nine main husbands)
2. This will change in the future, for sure. I can't provide a proper timeframe for when this will be, but please rest assured that all characters are intended to have multiple sprites.
3. Unfortunately, no. There will be no assets from the original/Revisited version.
4. We are looking at translating to other languages in the future, but for the time being, we don't think it is wise to look at translations until the game is finished. This is because there are often moments where I have to go back and make slight adjustments, which would render translations invalid and premature. Russian is a language that I didn't expect to see a lot of request for, so once the project is complete, I will happily compile a script of the entire game's written content (including settings and button text), for someone to translate.
As for your English, I think you did quite well for someone who doesn't speak English natively, so congratulations.