I play with a casual guild that raids Mon/Wed/Sat, and reseting DZs 6 days after you were there last isn't casual friendly. For example, towards the start of Luclin, we scheduled Emperor Ssra on Saturdays because we needed everyone there to kill him. Later in the expansion, we wanted Vex Thal on Saturdays, but with a 6 day timer, you cannot move ssra to Wednesdays without skipping a week. On mangler, the expansions are so fast, you don't have enough time to gear everyone fully anyway. Having to skip a great loot zone feels really bad. Also, raid length. We ideally want to have 4 hour raids. You cannot split a zone like north temple of veeshan over two nights well. If you clear part of ntov on wednesday, and reopen the DZ on saturday to kill vulak, you get a 6 day timer from Vulak. You cannot split a raid and do it weekly. It'd be really nice to break these long zones across two days, but you can't without skipping weeks. Also flags. Raid attendance is optional. Not everyone can regularly attend every night. What we would like to do in Planes of Power is rotate flagging raids across our raid schedule to make sure everyone has the opportunity to flag on a night they can attend, but it's impossible to do this due to 6 day resets. Changing DZs to reset every Monday (or whatever) would fix all of these problems and allow us much greater scheduling flexibility.