Whilst I think the market changes are good, I think 7 days is a little too short and will catch people with family emergencies, computer problems, unable to start DU because of some wierd problem and waiting on a fix from NQ (e.g. GFN users a few months ago) or whatever. When I had COVID last year I stopped playing for about 10 days. My whole family had it at the same time so 'I'd better log into a video game and move my internet spaceship so it doesn't get deleted' would have been pretty far down my priority list.
I think 3 weeks would be a better number and would still result in far fewer constructs at them than there are now.