@auspice Thanks for the feedback.
The automatic scripts are for a super-easy install when you're using a standalone Ubuntu VPS (Digital Ocean, Linode, or whatever). That is the standard, supported configuration for Ares.
If you're going outside of that configuration, I assume that you (or a buddy) already has some server-admin experience and can follow along the comments in the scripts to make whatever necessary adjustments make sense for your environment.
Your specific use-case was pretty simple (supplying a different username), but there are a million other possible subtle variations like that (changing usernames, directories, apache instead of nginx, yum instead of apt-get, etc. etc.) and it really isn't practical for me to make an installer flexible enough to support them all.
I've toyed with the idea of creating a text version of the script (like "install X then Y" in generic terms), but honestly I think the commands with comments would be more useful to server admins than plain text that's liable to get out of date. If the prevailing sentiment says otherwise, though, I can certainly create that.