This is the result of playing on the DMM server for over a year: http://imgur.com/a/p4XKV

Playing through the DMM version with back-to-back events has never been a problem. I have missed some events as a new player, but I never complained about it and in the end I never needed those units at all nor do I feel like I missed anything.

@lolix
Do you seriously think you can get every single of these units to min-cost, max skill, and max affection/trust? That's impossible unless you spend a lot of SC during every event. Not every event unit I have is at min-cost nor do I plan on using all of them. There are some units that I stopped using even after class changing them and getting them to a high level. Kerry, the tutorial unit I got from the beginning, still has 0% affection.

Most of the SC I've used were for leveling up units I like and I want to use. I've also spent a lot of SC on farming for Demon Crystals because it costs 100 of them to awaken a week. You can't expect to do that every week without draining resources (silver units, gold, aw orbs, etc.). I can say for sure that I have spent over 50 SC farming Phalanx 2 and probably at least 100 SC farming Demon Crystals.