Hello.
Pretty simple suggestion, the two weekly quests I usually do just dont have a weekly feel. More like an hour..
1: The black hole. maybe instead of doing everything once for the weekly, it is a few times. Three or so sounds good to me.
2: The 3HM weekly. Again, this can be done in a few hours, maybe 10ish or so would at least take a few days and feel a little more weekly.
I am sure there are others, but those are the two I do most often. This is nothing really huge or OMG, rather just food for thought to make some weekly quests take more than one day.
Thanks for reading, and have a nice afternoon :)