[giaur]

Recently I have to reencode one sbs movie since the eyes were swapped and my 3dtv has no option to swap eyes.

Really strange. So this option is needed in any case. Current engine can extract left/rigt eye image from movie, so adding this option should not be complicated?

Interlaced is not useful for me as mine is active 3d. I have to manually switch the tv to 3d mode.

Yes, I forgot about active displays. In this case there is no other solution, only manually switch tv to 3d mode. But for passive displays interlaced is really great. Another benefit is that xbmc gui can stay untouched (better quality rendering).