I'm using VEGAS Pro 16 build number 352 and the new stabilization is very complex and more control. It would be great if Magix alter it one more time to make it a lil bit more user friendly and understandable.
Anyway, Some tricks to stabilize an handheld footage without Jello is to first mask out the Subject that in focus, then stabilize the video clip. Which can be done in Premiere Pro/After Effects. I realize in order to apply the stabilization in VEGAS Pro it must be applied through Media FX, where I can't analyse the masked footage instead and disabled the masking after finishing analysing the video clip.
Bezier Masking in the other hand cant animate the masking manually like the masking in Event PAN/Crop, which is kinda tough to do this "Anti Jello" trick.
Also, footage from a stabilised Gimbal will 100% create micro jitter. This can be fix in VEGAS Pro Post Stabilization using Translation, but when the subject come closer to the camera and isolated from the BG (Depth of Field), VEGAS Pro stabilization will starts to follow the subject motion instead eliminating the jitter. I've seen Pr,AE can eliminate the jitter very well in post.
I Hope Magix can resolve this to make sure the software meet the minimum requirements by professional videographer/editor