The ability to overlay and merge multiple .ply files [1] is a great feature if you can match reference points and scale from the original scan then it can fill in detail gaps by running a few capture sessions. GSplats still need a lot of 'pixel' level cleanup to get the sample results quality level still beats point clouds any day of the week!

[1] https://github.com/playcanvas/supersplat/wiki/Editing-Scenes