I also prefer the 7 day length, I've found it harder to keep track of things with the shift to 10 days because of how my week is generally structured. I've also felt like it's increased the length of what feels like "oh we should/need to wait until the next mingle" to do something.

On the other hand, I can understand it being something useful/great for other jaunts and that it's something people besides me like because it gives them more time.

I think it might be good for something to be put for a vote when the jaunt is decided or otherwise a case-by-case basis.