Actually I would be playing Ginebra still now if I could. I don't because I'm farming faction for other characters for certain cards. She's my favorite character to play. Still is.
I don't mind the nerf as much because I play her differently than how I used to. I'll admit, it was nice sniping an antag or elite from ALLLL THE WAAYY across the map, then bursting over there with a 40% speed boost while they're still wounded, transform back, while eating the damage they're shooting me with like it's nothing and then executing them. I laughed back then and told myself, "This is so cheap, they are going to nerf this one day." and they did, as they should.
But you just run and gun now. Snipe from afar, when they get near, run away and then snipe again. She's still FANTASTIC. There are also cards you can use to make her cougar form good, I think they just want you to sacrifice card power for that same thing we previously got, and that's fair.
I use the Council Card that gives a 20% damage boost for 100% health and the Ginebra card that gives her a 40% speed boost for a few seconds (which is a lot at that speed). I use this in conjunction with the Javalin. The Javalin already does a lot from far away, when you have 100% health and full tension this wrecks targets and downs almost everything that's not a boss. Opponents have no chance in catching you when you run away from them because 40% of already fast is fast AF. You don't want to be near them with the Javelin anyways, as it does abysmal damage up close. You might like this build, who knows. I found it suffers little from her nerfs.