I'm excited to see this classic evolve but preserving its charm, without "chroming" it.
Although, it might be fun to hear that 80's 8-bit score start up-- and then morph into a 72-piece orchestral version! (Some of us may recall a video analog to this when the first laserdisc of "Texas Chainsaw Massacre" started playing-- as a direct transfer from horrible VHS-- which suddenly stops after a few seconds -- and is replayed in pristine laser format.)
Do we still support a "Group move" protocol? (I guess the PDF manual will answer this.) For those who never used it, this involves expanding the selected piece marquee to include other similar pieces (such as infantry), and then mousing in the desired re-direction, such as to another city, or region, and watching the entire group make its way there automatically, turn by turn. Also handy with fighters, or any other group of materiel which needs a massive change of battle orders.
I also love the fact you support keyboard shortcuts as well as mouse, and hopefully all on-screen controls can disappear leaving only the map with say, a tap on the TAB key, a handy toggle.