It’s still a lot, and can become more if there will be a clear advantage in using them.
The last time I checked it was like “you can look at the photo on your left, and try to draw what you see on the right”. Barely usable.
I’m not aware of editors that have a view other than ‘top’, so it’s a completely different concept. The closest thing is Deriviste, but it can only add POIs (not lines/polygons) and cannot not edit existing features, so it’s not an editor (and its author doesn’t seem to plan to make it a real thing). Still pretty fun: http://svimik.com/deriviste.mp4 (and really close to what I’m doing, even though I started developing my editor without knowing about Deriviste).
I tried to feed them several things in past. Minor things, mostly problems with the way it handles tags and imagery sources. Two issues were closed with comments blocked (blocking comments in GitHub community is completely unheard of), other issues ended with “won’t do it”. Couldn’t even make them add projections other than WGS84. Heck, I couldn’t even make them add Esri as default imagery for Estonia! Because it’s a global layer, and they find it too difficult to set different priorities for different countries! And you want to feed them something that radical? I wish you good luck.
Why not have 1 249,00 $ camera instead of €599 one? Well, from my perspective >1000 $ cameras usually go for commercial things, while €599 is something kinda affordable for personal use and hobby. May be different for other people, of course, but that’s how it is for me.
Also, does that Labpano have RTK receiver? Because I have RTK connected to my Qoocam, so switching to integrated receiver, even with IMU, may actually be a downgrade.