What tier or tiers did you play? We used to alternate between T4 & T5 but have now switched to T3 and just auto-play.
What GP is your Guild that is attempting the raid? 113M
What teams you did you attempt the raid with? I've tried a ton of combos both of my own creation and ones recommended online. My go-tos tend to be zJTR Resistance, Wedge Rebels, zAsajj Nightsisters, zVeers Troopers, and one experimental squad each day. I do about 25M-35M total damage per raid.
What part of the raid motivated or demotivated you to continue trying? Too. Much. Time. Even on full auto, doing five good squads takes about 25%-35% of my daily playing time. If I take the time to attack carefully, it's more like 40%-60%. That's a huge commitment for what amounts to maybe 5% of my total rewards collected in a week (if I have good RNG). And it's pretty much Every. Single. Day. if I want the reward percentage to even hit that already low percentage.
What about the raid did you enjoy? What did you dislike about the raid? The mechanics and challenge of it are actually pretty fun in small doses but not when it becomes the majority of daily play. I would probably love it as a raid that takes a single day and occurs once or twice a week*. Or maybe even as a multi-day grind that occurs monthly (a la Territory Battles). Currently though it's the most time-consuming part of the game, it has the least rewards for completing it, and it has lead me to auto-playing almost every piece of content in the game just so I can maybe keep my game play under two hours a day. Like many others, I'm now asking myself why I'm spending that much time every day trying to rush through a game with the least engagement possible just to check off all the boxes of all the activities, especially when all of that extra time isn't making me feel like I'm progressing through the game any faster than I was a year ago when the game took half as much time (or less) to really savor it and enjoy.
(*Yes, I know I can quit my guild and find one that can crank out Heroic in a day. Given that I'm the only active officer holding my guild together, I was willing to give EA a couple of weeks and see how they fix this. I would like to be optimistic that someone will figure out that designing content that substantially increases time spent in the game but also hugely reduces the rewards-to-time-spent-in-game ratio just doesn't make sense and can potentially wreak havoc on your player base.)
Thank you for your time and good luck in getting this all sussed out.