Lava images improvement idea

Hi

LAVA is good for doing some tests but every time I use it I wonder why it is so slow. So I looked more at problem.

Job which I started is going on pandaboard for 48 minutes already. So far it did nothing related with tests which I want to run. Instead if fetched some image, booted and started installing lot of Python packages...

This got me to idea - why not make *-lava variants of images which would have all packages needed by LAVA infrastructure preinstalled? It would take some minutes of Jenkins but less then LAVA one probably. Especially when bigger set of jobs is to be run.

Opinions?