Lets see what the pros and cons are...
+ a small mavic lookalike with image stabilization and VPS
- wrong PID tuning. Would be interesting to see if Tello's gravity calibration works well enough to do a flip without crashing.
- cutout voltage will be wrong, as Tello uses LiPos with higher voltage as far as I know
- reduced flight time compared to both e58 and tello. maybe 5 min
- fragile folding frame
- larger than Tello even after folding (maybe not, but looks like)
- E58 motors
I have built frankenstein quads a couple of times but that was to achieve a goal (like significantly extending flight time). Not to look like something I could not afford.