This script became CoronaProxy Lister and no longer developed.Of course it's easy to change previz type for Corona Proxy in Modify panel, but if you have tens of different proxies you had to change it one by one. For those who interested in automation of this routine I share my script.
Script can handle thousands of objects quite fast.
If you'll find some bugs or want some feature I'll be glad to make script better.
Update - ver1.1
- Simplified UI
- Added Point cloud density controller
- By default previz type changing for selected proxies. If "Affect All" is checked, then previz type will be changed for all proxies in scene.
Download script