Show (or indicate) connections even when topics are collapsed
After having used thebrain.com and ember.ly for quite a while, I stumbled upon Mindmeister. I really like your product!!!
I worked with connections a bit. Great feature, but what I don't like, is that you only see a connection when both topics are opened.
So: if you are working on a topic, you won't see its connections until the connected topic is opened, too. That way, there is a good change that you miss information.
I propose you change that behaviour to: a connection is visible when at least one of the connected nodes is visible on the map.
The 'closed' side of the connection could start/end on the junction level (the circle) that is visible, so you know where to look for it. .