Oh yeah 21 days is way longer than 4 weeks.
Not only did you not give back all the MCs, playing strikes should have its own rewards.
With these changes, when you do fractal CMs + strikes, you get fewer MCs than we're getting right now, by only doing CMs.
Well, people on gw2 exchange seem to go between 1.7g and 1.9g
Who said anything about selling it on tp?
1.92*1.9g = 3.648g, 1.92*1.7g = 3.264g
So that's a loss of 3 - 3.5 ish gold every day.
You need to atleast give something back.