Good theory, but Darth Vader is no match whatsoever for Baze/Chirrut in the 11th phase of GW. Chirrut can one shot legendary Boba and turns Vaders constant damage over time into a useless ability. The baze and Chirrut in GW gain health while stunned, gain health during other players turns, and if you watch closely, your Baze with 20 up health just sits there until his next turn, not gaining a thing. It is absurd that the characters in the higher stages of GW do not adhere to the same rules as the rest of us. R2 will suddenly become unstunned and immediately attack out of turn. Yeah, I know, it sounds like I just don't understand... but I have been playing this game since the beginning and have almost all characters at 85 with two legendaries (gear 12) and most squads gear 10 or 11. There is a failing in the game and it is not strategy. It is overzealous developers with their heads so far up their @mkons they have no idea how this plays out with real people spending real money and real time.
I have found the game to be very fun, but it is run by a bunch of blithering idiots. The entire management team needs to be fired and bring in a team that is customer friendly. Challenging and fun. Challenging and fun... that should be the motto. Not "screw the customer" which it currently seems like they promote at every level possible. If you need ANY substantiation, just look at when they came out with the Tank Raid. It took most guilds weeks to bring it down. Now there are a few that spend thousands on the game that most likely accomplished it. If they are putting out levels for the .05% of the top, they are missing the 95.95% of other player that want to play and have fun. It's not rocket science.
Yes, there are tactics that can be used to make life easier... but in the case of GW, this is a bunch of *. The only people who think GW can be won on tactics are the devs themselves with level 100 characters. How many level 100 teams can you face in GW before you are done? And they just keep going. It used to be only at level 12. Cool, I'll spend 4 teams defeating them. But now they start at level 9. So 4 teams at 9, 4 teams at 10, 4 teams at 11 and 4 teams at 12. So you need 20 characters (with synergy of other characters) 7 starts, at level 85, gear 11+ and fully modded with rare mods to even have a chance. Since it takes a month to gain a star, a couple of weeks to get one piece of equipment (and you need 3 or 4 for the full gear), you're looking at a time and money investment of a few years before you can succeed at GW. This is dumb. No other way to say it. Stupid, moronic, completely void of common sense and lack of understanding. And when called on it, you get the peter pan response, "Well use a suicide squad" or "back out of the fight and get your synergies right" or "I'm stupid and I know it, so I'm going to blame you with another lame excuse."
If they increase tenacity, potency, speed, offense and defense of their characters to levels we can't achieve, it is cheating. They cheat us out of time, out of money and when called on it, out of a valid response. Plain and simple, this is an issue with the game, not the players. As much as you want to blame the players, you are quite simply wrong. I've been doing this way too long to let someone with a high end clone squad try to tell me to just use different combinations. If you're clone squad is level 100 and your back up squads are level 115, then I understand how you can believe that. But until you spend time and money to play, you will obviously not understand the complete stupidity that is the GW.