On German keyboard ; is also requiring shift but you can do to it with 1 hand, if you have a right shift (thats the fat key below enter ,p)
I wonder if order popup would be a solution but this sounds like a huge change. It would require right click to always bring up the popup menu, not just sometimes.
So if the popup menu is considered, and if that would replace everything and offer access to ALL orders and is Context Sensitive ... well that still sounds like a huge thing to do... but if done right it could improve control a lot....
Edit: I am talking about a complete order popup thats context sensitive on right click, not just 1 for formations. As a example on how this can look, Homeworld 2 does it well.