So they admit to manually inserting trips in days off strings in Feb, but it turned into a mess so the solution from March onwards is to restrict everyone to 14 days off max, the apparent concern being the split in days off between bottom and top bid groups. Basically saying they feel 9 days off average is unsafe on your bottom bids, i think that point is open to some debate.
At the end of the letter is a clear reference to the commuters, saying we know you aren't going to like this but it has to be done. If you were commuting or planning to this just made it alot harder. Guess the non commuters will have better bottom bids in return. I was under the impression most were happy with the status quo, didn't really think it needed to be changed.