Here is a list that I've had some success with. It can't be overstated how good the Elite Sabotuers and Troopers are and they are totally worth their points. Let me know what you think.
Luke
Yeah its a pretty good squad. Pretty much the same squad I have been playing but run Regular Sab x2 rather than the Troopers. I also some times add in Jyn or drop Mak/Sab for Gaarkan when some times.
I really like the Elite troopers in this list as it gives me access to my favorite command card Covering fire. If I had access to two extra sabs I would try out your list but at this point I am happy with what I have
The problem with only running 6 acts is that its 6 six acts. The troopers use a round doing nothing. Since you only play 4 rounds in most games thats huge. I would try Jyn/Gaarkan over Mak/Elite Troopers. Its only still 6 acts but you gain a speed guy and Jyn who can really being annoyng if you can place her right. I am just not a fan of the troopers. The Wookiee with charge is a great combo with the Sabs. I am all for the Troopers and they do have some good command cards but feel they are best run together as a group.
In my Sab build you gain 4 guys vs 3 guys and two acts for the same points. That is why I like the Sab over the troopers. Having 7 acts is huge for rebels right now.
I could see running Fenn+Elite Troopers over Luke too. I have played vs this type of build and really like it.