Well, at least here in Japan, Sailor Moon is very, veeeeery far from being as popular as Dragon Ball and One Piece (I don't know about Italy though).
However, this new movie you're talking about may give the franchise the boost it needs for a new game to be released.
I remember there were some pretty good Sailor Moon games for the Super Famicom, so a new beat 'em up with the same level of quality would certainly be welcome.