You can't "ADJUST" an event to meet the current level cap. You can make new ones that are up to it, but you can NOT adjust old ones. Not because it's "mean" or because it makes things too hard, but because it's a kick in the shorts to EVERY new player that will ever try and play this game.
For the people who, due to playing from launch or spending real money, had 5 7* Jedi for the first one or two Yoda events, it doesn't matter. But for everyone else, those who are just starting and those who have been working for months to get 7* Jedi ready for this event, you just flipped off all of them.
Speaking for myself, I pushed as hard as I could as a FTP to be ready this time around, and now that I am (or will be tomorrow, need 4 Ashoka shards for 5 7*'s), you've made it harder and my 7* team is no longer good enough. Even 6* is a kick in the teeth, and I doubt I'll be able to beat it since my Jedi are mostly "support" types, not damage types. And if you are going to "adjust" events whenever the level cap goes up, it's possible that by the time I am ready for this one, it will be even harder and I'll still be behind. For those who are newer than myself who are just getting a team of 5*'s together, they will *never* have a chance to beat 7* as catching up would be nearly impossible without throwing wads of cash at the game. Anyone picking up the game for the first time at this point will NEVER get Yoda.
And that's what it's really about, isn't it? That's the only reason I can think of that this change was made and, more importantly, made quietly with NO prior warning. The (mostly) money spenders got Yoda in the first few events, and now that the FTP's caught up, you upped the difficulty so money spenders are still the only ones who will be able to finish it. Yoda is a sneaky version of a cash shop card only character, dangled out for everyone to see and "think" is obtainable, but you yank that carrot a bit further away whenever it gets close to being in reach.
This is a bad business move, long term. I understand that EA's strategy has always been money first. So be it. But moves that aim to wring more money out of current players but have the side effect of making it harder on new players (and at the same time pushes some current players out of the game) greatly shortens a games lifespan, which means less money in the long run.
Think ahead Dev's. You can only do this stuff so many times before you lose enough players to make the game no longer profitable.