My +1 vote for visual editing tools for the newer dotLottie file type (https://dotlottie.io/) with its impressive bandwidth optimization. @MaxZieb has done an amazing job and constructed a script for Lottie player with live preview (made with Hype Data Decorator)
Now we can only hope that maybe he @MaxZieb would want to come up some day soon 
with an elegant solution of visual integration of that newer dotLottie file type.