I think we are asking for an "option" in users preferences, as in user preferred method, not a hard coded forced one way or the other method.
If it plays automatically how long do you have to let it play for ? do you sit back and wait until it's finished and plays all the way through ? is that what it wants you to do ? should the user be allowed to have control over it like you can now with Riff Edit ? or is destructive audio editing and wav creating a better way ? you now have an option to use Riff Edit or the old way to render to 32 bit wav files attached to the SGU.

https://stash.reaper.fm/u/ReaTrak (Scripts for Biab Reaper)
Open SGU in Reaper Instantly