I searched the site to a place to leave a suggestion, but did not find anything, so I hope that leaving it here is okay.
I have a website with two installations - production and development. In both Akeeba Backup configurations I've specified a custom Output Directory - as you recommend.
When I restore production to development, I need to remember to update the Output Directory, and if I don't, the development backups are stored in the production Output Directory.
It would be nice if when the restore was being done, and if the Output Directory is not the default, there was an opportunity to specify the custom Output Directory, before the restore was finalized.
When a restore is being done, and near the end, there is an opportunity to set the htaccess file to default, or not. That might be a good place to enter the custom Output Directory.
Thank you for listening.