Hi
the multisite limitations, ie of user groups/user, and hence number of multisites, is something that needs attention in our opinion.
whilst it is strictly not a seblod issue and more of a joomla issue it does impact on the use of seblod in joomla.
we have had to move a project to drupal because of the issue, another one starting in drupal and one is starting in plone, because joomla/seblod has limitations imposed on number of multisites.
our suggestion, as there is seems to be little activity in joomla on the matter, that one of the seblod/octopoos skilled team take ownership of the problem with joomla as they have better skills than we have to see the matter resolved.
Alternatively it be made clear that the issue will not be resolved and everyone know that the limitations will stay indefinitely.
seblod is a great tool and this limitation removed would be a tremendous help.
regards