I just read the rules twice....I was a bit lost the first time. So I read One for All rules and found the game example on Eureka website and it was really clear the second time I read your D&S rules

I have a question though : if player A shoots at player B but player B gets a better result on his dice roll does he hit player A ? Can the defending player hit the attacking player ? (like the duel in One for All)
Suggestions for the scenarios: you don't give any information about the factions. How many actors per side, which Movement Rating,...I think you could add something like : each player has 20 points of MR (an example) to create his faction (it could be 10 guys with 2MR, or 5 with 4MR, or any mix,...).
Experience : you could create campaigns and each actor would be able to gain +1 MR if he survived (up to a maximum of 4 MR...a heroe). He could win MR for each kill, or because he won the game,....If the MR points are not used to enhance an existing actor they could be saved to buy another one. Example : I get 2 MR so I can enhance 2 surviving actors (a maximum of +1 for each actor) or buy a new actor with a 2MR value.
The losing player should win MR to replace the dead actors......
What do you think ?