@CompleatBeetI disagree, she is indeed overpowered. She essentially has 2 passives and 2 tacticals, in addition to likely the best ultimate in the game. Survey beacons, pinging while flying, jetpack, missiles, and skyward dive.
While you mention the fact that legends like pathfinder or horizon have the ability to gain good positioning, you forgot that these legends need to expend their tactical for their abilities, and then deal with the recharge timer. Valkyrie has the ability to gain good positioning whenever and wherever she wants with just her passive, and still have a super powerful tactical on hand on top of that. She can often reposition so many times during a fight that it lasts well over two minutes sometimes just chasing a valkyrie that won’t stay still.
Speaking of her tactical, it can be used a lot quicker and easier than you make it out to be. And with the stun it’s like an instant arc star every 30 seconds. The problem is it can hit overtop cover, and if you don’t want to deal with the damage or the stun you have to leave that cover, exposing you to be shot super easily. And if you do take the damage, that’s a 3-second stun which makes for essentially a free kill on a stationary target, and even you stay behind cover it at least opens up the opportunity to be hard pushed, fighting a shield level worth of damage down vs. Valkyrie’s team.
And her ultimate, while it can be cancelled yes, you barely need any cover to utilize it safely, and while you’re up there you get a free ping on enemy teams and can position your entire team advantageously instantly. Or when in a fight you can even just straight up leave if it’s not going well or if there’s a third party, or if the ring is closing in (the ring is never an issue with Valkyrie teams, which is yet another problem, it’s like the rest of the teams are playing handicapped). Not to mention she can scan survey beacons and then instantly rotate her entire team to the backside of the next ring, every ring.
But the biggest problem is that all these abilities are on the same character. That’s too much for one legend to have, and her 98% pick rate in ALGS is proof of that. Gibby is now 70% by comparison, with no changes to his kit, and he was 100% last ALGS. This is essentially to say Valkyrie is proven way stronger and more valuable than Gibraltar, who used to be the best character in the game no question. But he hasn’t changed at all, Valkyrie just has that much of even better tools available.