Someone, more concretely almaf, asked me if would be possible to implement something to remember (or reload) the filters you've created during a game. Sometimes happens that If you're playing a big game, you leave it and reload it again, all filters you created do not already exist (they've been removed) so you have to create them again. Perhaps they could be saved in a tab file, or inside the savegame file.
You have my support.
Other useful options dissappeared in more recent versions, such as immediate display of the last line you were working on when reopening the lineschedule window, or the last used filter in the vehiclewindow, etc. I frequently miss them :'(
Count me in, if possible... :-\
Sorry... :-[ :-\