Thanks, it's intentional. I've seen some people complain that Blesta looks "too slim", but we did that on purpose. While we will be adding in additional support for a lot of things, or goal is to keep everything simple. The fact is that the multi-level, super long nav that our competitors have contains things most people never need. The way we implemented the plugin system, and designed things overall, reduces the number of links to those actually necessary and settings and things that aren't needed on a frequent basis are hidden away.
The problem for us I think, is that people are use to the clutter, but I'm hopeful that once they spend enough time in Blesta they will come to appreciate the way we handled the UI.