Having them different sizes depending on how many other filters are on the track makes mixing a little more difficult as it's more work on the eyes to scan and find and interpret them.
Same thing for volume/pan filters.
I love the idea of being able to change their position within the chain, but maybe we could just add additional filters for that, and leave the original "full track" volume/pan and signal meter filters alone, in a fixed state.
Be gentle. I'm trying to think of ways to make mixing easier without actually introducing a mixer.

