Yes, the power requirements for the Omega2 are much higher, that's one reason I said the package would have to be bigger, to hold a bigger battery. I personally think it would still be useful if it only had a single day's run capacity as well.
I'm most interested in the combination of a battery, a wireless charger, a touch screen all in a compact case. I wouldn't want the watertight case, because I'd want some kind of access to interface ports for connecting to things. It might be possible to do that with some kind of watertight connector, though.
I think of the key potential as an instrument connector gadget, where each person adapts it to their needs by connecting their instrument and writing the monitoring code, then connecting it to the standard network stuff. Like maybe via the SignalK NMEA multiplexer, or some other broadly used IoT type infrastructure.
In that role, a larger size would not be a significant problem.