DO NOT MAKE ANY OBJECTIVE A DEATHBLOW!
In my opinion, do not make any event objectives that cannot be achieved during any given match.
Personally, I'd much rather play 50 matches over the week with a match score over 100 than try and roll the dice for 10 Incursion/Escort/Skirmish etc. matches that may or may not even be available at any drop.
Make objectives more difficult to obtain, not lucky to obtain.
Also I believe it's been said, but don't make any specific chassis a target. You should be wanting people who spent money on their new 'Mechs to use them, not hide them for the first week until the bulls-eye is off of their backs.
Also x2, please don't build events around game modes no one wants. Forcing players to play on a mode they despise anyway just makes us that much more irritated when it comes up after the event (or after we complete the event requirements) and leads to suicides, disconnects, 1-man rushes etc.
Edited by Havyek, 25 April 2017 - 02:55 PM.