Agreed Spooky,
Some groups are great at using texting and emails between games to get things moving for the game night.
Other groups, don't even talk until game night!
My table doesn't really have "downtime" as you think of it. After the run is done, its time to lay low..... Which we play out! Because SOOO much can happen during this time especially if you include hooks generated by the players themselves into your considerations. (and ALL players give you hooks! Be it in their negative qualities, their back story, or even just their in game actions). Does that alcoholic teammate slip out for a beer and get spotted? Does that old enemy of the character start spreading money around to track them down? Does that dependant of the character get threatened and abused by people looking for the Character? Does a contact call and need help RIGHT FRAGGIN NOW!??
These, and many more things can happen during the "downtime" if you play it out, instead of just saying" Well you lay low for 6 days"
And it's these types of things that take the game from being a series of runs (and only runs) into something more. While the group is "taking a break" from running so the Rigger can learn Aircraft mechanics, maybe the Sammy's best friend has gotten in trouble with the mob -AGAIN- and needs they Sammy's help? Maybe the Mage, that's been a bit of a dick to his spirits, gets a visit from a Free Spirit looking to "talk" to the mage about the way he treats his spirits?
Maybe the Running scene is in a slow period and there are no jobs (or maybe they just fucked up bad enough, that no fixer will give them a job!) So now they have to figure out a way to generate money? (like, robbing a medical transport to sell the drugs and goods to a black market contact? Or raiding a Corporate data haven for paydata?)
If you play through the "downtimes", you actually open up a lot of doors for other activities that create the feeling of a more fleshed out world then just:
Go on run. Shoot shit. Sell stuff. hand wave downtime. Go on run. Shoot shit. Sell stuff. Hand wave downtime Rise, wash, repeat.
the trick is getting to mesh and flow well so that people still have the time to heal up if they need it, get the new gear they want, and learn the new skills they want. And THAT is where the good GMs at freeform game mastering shine! It takes someone who can adlib and assemble multiple different leads and threads into one giant picture. It's not something every GM can do well.