I second the sentiment of the previous posters on this topic. I do have a concern with the trend by UNA for the LMS and MassMailer focus. I wonder if this is driven by corporate customers asking for these two features.
On the other hand, there are a LOT of improvements to be made to UNA to make it very competitive with the big SNs. Speed, Ease of Use, UEX, Instant messenger, photo handling, images in posts, previous and next on all content related apps, groups features (files, albums, discussions, events etc.. like dolphin) I could go on but it the new year..
Anyhow, best of luck with the LMS and MassMailer but don't forget the other suggestions that I have made and see many others make over past months.