As Steve said, I would definitely experiment. That is how some of the best recipes/methods are created.
My thoughts on this:
I would be worried that placing the ribs in a foil pan of apple juice would not get adequate smoke coverage as they would have limited surface area available to the smoke.
If you try the no peak method, make sure that you don't try to compare 2-2-1 at the same time as the nature of 2-2-1 involves opening the smoker and invalidating the results of the no-peak. The no-peak is the key to success in this method. Keep the smoker closed for 4-5 hours minimum before opening to keep that moisture in the smoker.
If you want to sauce the ribs, do that in the last hour and you will be rewarded. Personally I hate cleaning up the sauce mess from my smoker grates, so I sauce my ribs and throw them in the oven in a sheet pan under the broiler for a few minutes to caramelize the sauce. Much easier clean-up IMO.
I am not sure if there are right answers here because everyone's tastes are different. If you really want fall off the bone texture, smoking at 240 may provide better results. I like mine to fall off the bone and my bones are totally meat free when I am done, but I do like to be able to chew them off, not have the meat fall off when I pick up the bone. To each their own on this preference.