You know looking back at this there had to be something in that monster drink. Leave alone the modularization pitch; why I gave disabling logins altogether as an example is beyond me right now...
I suppose i'm more interested in having random themes more customizable from the admin template.
This is a situation where I don't want the default login forms; that bootstrap navbar will be added into a plugin im working on for any theme. With the default login forms it makes things a bit redundant which is more of a pet peeve than anything but it's really hard to modify a themes template without modularization so that everything looks correct.