T7 is so refreshing after grinding T6's for weeks...
On our first one, we had one of our two strongest P1/Teebo teams start the raid and communicate with the other one on how it was going. I was the one that started it and I managed to get P1 down to about 9% left and then made the huge mistake of trying to escape my toons to use later... After Teebo, EE and QGJ all failed to escape, I finished my P1 attempt with about 4% left. We had some trouble clearing P1 and doing any decent damage into P2 and a lot of members lost key toons clearing P1 and getting the door to drop in P2.
Long story short... On the first few T7's, have a heavy P1 hitter start the raid and go as far as possible. I could easily have solo'd P1, but was depending on my P6 escape strategy to save toons in case we needed it. It simply doesn't work. In T6 I could escape with Teebo, EE and QGJ almost every time (well-timed multiple attempts), it ain't gonna happen in T7 and you're better off maximizing damage. After the first heavy hitter is done, have your next best P1 artist go in to finish it off.
Make sure your mid & lower level members get in for the door drop damage in P2&3. DROP THE DOOR ASAP. Don't rely on TMR from Teebo or QGJ unless they're heavily modded, and really not even then... It's hard to get TMR to land, and almost impossible to get speed down to stick before the Drop without really good mods.
Have your deep roster members hold out until P4. At this point you're pretty much just throwing toons at the Rancor to do damage. Your heaviest hitters should still be waiting to strike at this point in case things stall out.
General note for P2-4. Make sure your members with strong Yoda's only use him when the Rancor has 50% or more health so he gets his foresight buff. With BM, it will usually allow the entire squad to survive and do an additional round of damage.
Within a week, our guild went from sweating even attempting a T7 raid to finishing it in less than 24 hours. Within 2 weeks, we were finishing them in less than 12 hours. Now we have had to implement a 12 hour 0-damage period to allow everyone a chance to get in on rewards. We destroy a T7 raid in a couple of hours, and we overlap at least 10-20 million in damage in just our top 10. we often finish raids with only 30-35 members recording more than 0 damage, and 10 of those members are less than 100k. In our last raid, we had a member that couldn't get more than 50k damage in a month ago do more than 1 million.
We're almost entirely FtP. We have one mini-whale and a solid core of 10-15 avid members that might be classified as goldfish food... The rest are regulars and some newer players.
T7 really is too easy.