Hi Michael ...
My two bits.
I love the UI ... it is slick and simple to use. Sure, I know you have some improvements you want to make over time but please don't lose it's essential character.
I am doing more and more of my architectural drafting with MoI now ... By using templates where 'layers' and 'styles are coordinated and color coded I can move back and forth as necessary until I get to the dimensioning stage and then I have to use another product. But MoI is simply a cleaner system and a greater pleasure to use.
Cheers,
eric