At the time of this posting there are 203 distributions at http://drupal.org/project/distributions . I just heard about this project (which looks awesome btw, fantastic work) but I was wondering how hard it would be to support these flavors of drupal? Essentially it's just drupal core + a slightly different install routine and I see you already have support for D6 / D7 install profiles. Especially now that more popular distributions have their packaging scripts actually live on drupal.org would it be possible to almost white-list popular drupal distributions for inclusion as possible install options?
This is slightly selfish on my part as I maintain a drupal distribution for education called ELMS but I could see a lot more people utilizing your services through theses flavors of drupal. Distributions provide the business logic where as Drupal is just providing the framework. Drupal by itself is vanilla and these distributions are whole banana splits and full sundays of ice cream :) Open atrium, Drupal Commons and many other very popular distributions could provide people with out of the box use-cases that they could run with (obviously on your infrastructure) :).