In the Import dialog it detects acid bpm, why not let it detect key or be able to set it for non acid loops ?
If you had the same options come up if it detects key as you have in the Loops picker, to set it to the song key or chord root. Have the number of bars to repeat the loop. Let the Audio Edit remember the Snap and have 1/4 1/8 1/16 option.
I did a copy n paste in the pic below, can you guys do a copy n paste of the code from the Loops Picker ?
Loops are easy with Drag n Drop. It would probably be too hard to have non destructive loops so you will just have to convert them to a wav file track.

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