1. they should disappear on the last day of the month, at the last minute
2. In my opinion, the prize should be really nice. Maybe an item that gives something to one player, then the players would be motivated to fight for it and the guild would have to fight for every player to receive it
e.g. pet lvl 10 or an item that draws you a different yellow in a given item or adds it if possible or other item something new one
3. No, only bosses should drop guild trophies.
do Kaligo normally 24/7
The teslon should also drop too 1 like every boss
and bosses in BS should also drop 1 guild trophy
but they shouldn't give exp
will bring more fight ther too on low lvls like CF