So I believe being able to batch freeze/unfreeze tracks is already on the the ‘top 48 features’ list for fall 2019, BUT…
In addition to batch freezing, it would also be great if there was a better indicator that a track was frozen. I know there was a feature request for putting volume and panning in the playhead of the track where you see the name and stuff. It would be great to get a freeze indication there, too. It could be the snowflake symbol, or to save on space, the indication could be like a highlighted/colored border or something… maybe there could be a background image with stripes or snowflakes or something…
But I’m happy with any indication that allows you to look at your entire project and see which tracks are frozen and which ones aren’t.