Another wish I'd like for the time alignment is ......
Instead of delaying the whole frequency spectrum have it broken into 2 groups.
For instance from 80 to 3000 Hz for mids and 3000 up for tweeters.
I have tweeters in the dash and mids down low in the doors so the distance from the left tweeter to my ears and the right tweeter and my ears is different than the left mids and my ears and the right mids and my ears.
If I set up the delay so the mids sound correct the tweeters sound off and visa versa.

see the crude attachment for example