Hrr, finally its all opensource, so I decided to hack it a bit
Attached is a touchgraph build with the next features:
* Deadlock patche applied, more deadlocks fixed
+ Mouse wheel controls zoom/rotate/locality
+ "Collapse node" menu item
+ "Collapse leaves" button - hides all leaf nodes.
+ Highlights all adjacent nodes for node under cursor
+ Invering colors of adjacent nodes for better navigation
+ Middle mouse button on a node, move mouse => all edges of this node are increased in length