Currently with AEB option, I can only opt in to 3 exposures or 5.

What I would like to see is an option to increase it to 7 exposures, and to increase the difference in exposure as needed.  I believe it only give you a 2/3 stop change, but the ability to increase from 1-2 stops would be a tremendous improvement in certain situations.  

Any upgrades, hacks (other than manually changing exposures), or other I may be unaware of?

Even at 1.3 stops with 5 exposures would satisfy most of my challenging scenes.

Sadly if you have the Mavic 2/3 there is no more control.

That would be great.

With the Mini 2 we only get AEB 3.....

The new mini 3 have 5 Shots...but in 2/3.....it's not enough.  I know with other App like lichi you can change the settings , sin some drones , but I don't want use  third party App.