My idea is simple:
If you want to change the emailadres your alias send an email to you have to change it 1 by 1 for each alias.
This can be a real struggle for people who have 100+ aliasses.

A function that lets you change the 'send to' email adres from all alliasses at once.
Of course it shouldn't be limited to all or nothing a function to select the ones you want to change should also be made.

So I can select 10 alliasses at once I want to change to send to email for all of them at once.
Or even all the alliasses I have.

I think this function is very usefull for power users and would save them time.