I'm realizing that I'm going to need my sewing machine to properly finish up the "minibag" but I've got it mostly done now.
Also, I tried mounting my bag in the first post to only the saddle rails and it worked out reasonably well with all the same gear as before (tube, multitool, psi gauge, 3 levers and patch kit):http://i.imgur.com/1vd9GdS.jpghttp://i.imgur.com/qfD6rVl.jpg
Just further enforces (for me) that rolled ends and straps is the way to go for a wildly functional bag...just takes a little ingenuity to mount figure out how to mount it...also realised that this bag can be mounted to the frame tubes as well (specifically to the head tube) which could be a useful way to store gear but still have a access to an external pocket while riding (though, a jersey pocket would be a better choice for most stuff like that)
As for minipumps...would having a "pocket" and a velcro loop to secure it in place be sufficient?
Lastly, here's the patch/boot that I "made"...can be cut with regular scissors to the size prefered prior to riding:http://i.imgur.com/xnHslGy.jpg
my 2 cents: make a small bag that holds 1 tube, patch kit, multitool, levers. Why carry a 2nd tube? the patch kit will bail you out if you puncture twice.
Also, how about a built-in separation between the tube and the tools? I have once managed to damage the spare tube with the tools, only realizing that when the tube was needed.
I have to agree with you...when I get a flat and replace the tube I immediately patch the puncture before I put it away just to be safe...I have had a time where I punctured both tubes at once but I also knew that road was terrible and bought a 2nd tube.