OP,
I guess your main objection is that you don’t want to have to export every time you adjust photos. I kind-of agree, I'd like to be able to setup some export settings, and have them auto-run every time I shutdown LR. Or something like that.
Here is what I would like to be able to do, but don't think I can:
Import all of the pictures into the computer in My Pictures, and a subfolder with date.
Adjust some in Lightroom.
On export, MOVE the ORIGINALS to a new subfolder called "originals" and save the newly exported files in their place.
I could import right into an originals subfolder, but will then need to select the export folder every time (one level up from originals). Not a huge deal, but not ideal.
I think it comes down to this: Adobe wants you to always use lightroom for photos, and not other programs – even when just viewing them or transferring to another devices. I like the speed and ease of use, and especially the face recognition of Picasa, so I'm going to have to continue to always manually export after adjusting photos. Can't complain though – Lightroom is clearly better for the processing of lots of photos quickly, needing to manually export is not that big of a deal. Using LR and exporting is faster than adjusting pictures one by one in a paint program, as long as you are adjusting more than about 3 photos at a time.