Currently, the game is very good. If it wasn't, I wouldn't be playing for the last 18-months. Game play is good, meaning, I like playing either side. There's an editor, so players can do as they wish. Going forward, is there a going forward? Meaning, is this the end for SC franchise? I played the original SC, SC-Pacific, SC-2, SC3-World with the squares, and now SC-WAW. I didn't play the SC-Europe, maybe why I lose to the top players. The evolution is much, much better. Obviously, the makers (Hubert & Company has to pay their bills, unless they are independently loaded already).
If there is going to be another SC, if I was fathom the guess, it would increase everything in size. Map, Turns, and add more Tactical feel. Thing is, to player's want that? Would is sell? Make the next flavor with more detail, units, everything. If so, then all kinds of new design would be needed. That's where my list, came in.
Now, specific to your question: Partisans
Partisans: They are too predictable, press the key 'p', you know where to block them. Currently, from all my games, the Partisans never appear, because players block them. They have to block them, else it REALLY screws them over. If they don't block them, it's because they forgot. Any entire Russia sector is then hosed, or a port in France/Paris is captured. Been there, done that on both sides. So is this really a strategy or just maintenance. Late in the game the partisans become a real factor, when the race is on for the Allies attempting to win the game.
1) Make random more locations
2) Don't make them as powerful in a strategic game.
3) Allow Allies to invest in specific areas for partisans, at a cost.
4) Give partisans the ability to "run away", kind of like submarines if in their native Woods, Jungle, or Big City
5) Allow the partisans to actually to 1-damage.
6) Let the partisans move with stealth, not capturing land/city/rail. Invisible mode so to speak.
Now, to Rockets:
Everytime I read about WW-2, watch YouTube, I hear about the Rocket bombings of London, the terror & death. The story of how Patton was not given gasoline, because Monty needed it to find V2 launching locations. The people of London were completely freaked out, and rightly so.
a) Give the Germans a rocket unit as a reinforcement, when ever historical they started, obviously after Fall of France, right?
b) The Rockets launched on London, need to do something for morale in current model. Just popping a little supply, not significant.
c) Give the Rockets, FOW protection. Or maybe the ability to "retreat" when attacked. The scientists pack up and go.
d) Maybe a better idea, make the Rockets shoot together all differently. It's not a "shot per turn", but a huge volley, that packs a big punch, but take longer to reload so to speak.