Yes no decrease if you fail skills, will use another method. About browser based not sure yet, need to ask a coder friend if he's willing to port it (see my other reply to your question). Curiously that you're the only person I know so far willing to pay more for a online only version (usually is the opposite!).
The yuri version is not even planned, because the new character artist is quite slow, he has still to finish the boys yet... and the game is HUGE compared to the first one. There will be 12 boys, but already the first 3 had more writing than the first full game!! So if I had to include the yuri with those "standards" the game would cost $69 and take 4 months more to write/code
There will be more yuri games anyway in future, don't worry!
))