Yea scrolling would be nice, there is many improvements they could make, but i do find myself using the app every day more then other apps i have, i like the user interface.
I have no issues with my battery, i have a extended battery and i also carry a backup battery fully charged with me, along with a car charger! lol
i leave GCN running in background the whole time in case i want to do a quick cache.
One thing i noticed with the maps is if you bring up a map then back out of it to look at the cache info or what ever, then go back into the map, you have to reselect the map background that you want again, this is fairly annoying that they should fix.