Adding in-wall stuff is awkward using the battery pack due to the limited user interface available. Especially true for in-wall controllers that seem to be more picky.
It would be nice if you could temporarily set the Vera into a WiFi client so installers could walk around with the Vera, battery pack, and a laptop. The laptop would continue to be connected to the network so you would continue to get all of the UI4 interface goodness.
This would involve some sort of “temporary” network configuration that would persist during the install process (perhaps time based, perhaps based on explicit settings, perhaps based on whether you’re in the wizard).
This would be even better if there were a way to switch between the battery pack and the wall wart without a reboot. This could be less of a deal if the battery pack is has enough juice for a reasonably long install session.
It would be even better if you could power the vera from an industru standard cable that’s on the laptop (e.g. USB). That way you could ship a single “more useful to the customer” wall wart with vera. You could then drop the battery pack, second wall wart and the associated cables. Some laptops might not have enough power for this – the wall wart you ship is good for 1.0 amp at 12V – not sure how much of that is really consumed.