Its one of those time consuming, not as fun but, very important steps in the mixing process. Can the bakers at Cake look at adding a tool that will do an auto gain staging tool that set the levels non-destructively for the audio tracks?
 
Thanks for your consideration!
 

Hi. You could just use normalize to do that. IIRC it can batch process clips. I have a (custom) keystroke for it (I use Shift+Ctrl +N) to open the Normalized menu. There might be easier ways, but not that I know of...
All the best.

Zargg71 thanks for the reply. I never thought about using the normalize feature. But is that a destructive process?
 

Normalize is destructive if you use it to reduce volume. If it increases volume, then it is not destructive.

I often use it and normalize to minus three or so. This leaves plenty of headroom into effects.

Lots of us would like to be able to normalize on an average loudness measure instead of loudest moment. This is not yet available, but must be coming before too long.