Okay, I've found out that it's not possible to have 2D hotspots within a scene that calls for stereoscopic output in VR. I'm sure that Klaus could add a disparity variable that would actually provide control over the depth of a hotspot whilst in a stereo scene, but until then....
Umalo was kind enough to reach out and let me know about that issue, and offered a suggestion. That got me thinking along a different path, and I've landed on something that works pretty well. It's probably been done before, but here's what I did:
In my Max scene I have a large jpg (4320x2169) of a floorplan mapped to a vertical plane.
I opened the jpg floorplan in Photoshop and added my own hotspot graphics at the proper points on the plan.
I also gave each hotspot a dropshadow to give a slight illusion of depth.
Next I created a new hotspot graphic for the SKIN folder, the size of which is 50x50 but yours could be anything you want.
This new hotspot is actually a solid black color, but with the opacity of the layer in Photoshop turned down to .1%
I named this vtourskin_hotspot_blank.png and included new code in the vtourskin.xml file so that this png can be used in the tour.xml
In the tour.xml I went to my original hotspots in the scene and changed their name to the new blank one I created.
Before I open the tour editor, I went and just made the black layer 100% opaque so that I can see the hotspot during this step.
Went and placed them where needed (over the hotspots that are showing up as a result of the Photoshop floorplan work.
Turned the opacity back down to .1%
You then get 2D hotspots using invisible, regular hotspots. Of course, you don't have the motion you normally get with a 'visible' hotspot, but that's okay for me.
Hope this helps.