Doktor Avalanche
I feel like I could have written this myself... This is exactly right.
The only thing I would add is getting them to turn up on time is more or less completely impossible. If you tell them to turn up at midday, they will all start piling in around 2pm and recording will start at 3pm, that's if they haven't double booked an appointment with the dentist.
That's why on recording day I would aim for a sunday (or whenever nobody was at their jobs) and depending on the band try to "start" around 10am or as early as I could push them into. The first hour is usually totally lost to people just showing up. The next hour would be everyone mucking around, which is fine... get your coffees, shoot the pizz and I could interject little bits of stuff to individual members or the group as a whole like "I want to get this this and this done today" and sidebars like "okay so I want you to try this when I'm doing this" and maybe little small noodle sessions to work out specific parts while others were doing their own thing. Also do little mic level checks. Essentially as everyone's having a laff I'd zip around sorting things out with everyone and the gear.
Then a clap of the hands, everyone with their rig on and ready to go and you can get a good hour or so session in before everyone wants to take a break. Take 30, everyone does their nature calls, lines up a few more beverages or has a snack, more sidebars for things to be done, double check levels and back at it.
Rinse repeat until people start having to leave. Then I'd usually hang on to whoever was sticking around for as long as possible to work on other stuff for next time or do any overdubs or just hang out.
I kind of really enjoyed that life and want it again but more structured/less frantic on my end. The thing with my rooms was everything always had to be ripped down quickly, they weren't the greatest set up gear/room sound-wise, I didn't really know WTF I was doing (as far as recording stuff) and I always had to cram it in when I wasn't working (which was a LOT).
Now that I've had about five years off of all that to think, learn and calm the frack down I think I could run a really epic demo studio. That's one of my goals now. Back to what I was doing before but better and without being completely tied to daytime obligations.
Meh... may never happen but it's a nice thought.