I have a Premium Account and love the functionality of setting Rally Points.
At the time of this posting, I'm in a game where I have racked up 100+ provinces on the European map. Since I play on my mobile mostly, managing that many provinces can get cumbersome. With that much expansion, I often have to fight wars on multiple fronts and must set rally points all over the map, and have to scroll a long way to set a rally point; only then have to repeat this for each province from which I want to send troops. The result is that I sometimes end up with orphaned units standing idle in neutral territory that I can't move without starting a war.
I think it would be better idea to select a group of provinces, and give them all the same rally point ONCE. Likewise to be able to disable rally points in a similar manner.
In games when there are multiple fronts it would make sending reinforcements much easier, and I believe would result in less orphan units standing around doing nothing but eating valuable grain.
Thanks for considering this idea.