I like most of these changes. Several jokers that immediately justified building around got toned back.
Magician giving two lucky cards instead of one makes lucky cat a lot stronger, and it’s getting buffed independently already. Steel joker nerf and glass joker buffs seem good too. Campfire nerf is harsh, but justified.
I’m surprised hologram isn’t getting nerfed. It quickly pays off with already good stuff like DNA or even certificate, and even without much synergy just buying standard packs makes it strong.
The vampire and midas mask nerfs seem overly harsh though. It was a powerful combo, but it required two specific uncommon jokers and time to scale. With both parts being harder to proc, and the payoff being cut in half, I can’t think of a situation where you would really want vampire. I guess if you have face card synergy you could run midas mask for a while until you have most of your deck golden, but even then I would be tempted to swap to something else pretty quickly. Golden cards just don’t have much payoff. I would have buffed the devil tarot to target two before the magician for the same reason.
I only played Stellaris off and on, but I went years without buying an expansion and always thought the new systems were complete and better than what they replaced when I returned. Breaking current saves is frustrating, so I guess you would need to delay an update if you had one you planned on returning to.
If you didn’t know, you can roll back to older versions of steam games with some work. A few games have a built-in system, but most of the tile you have to manually replace files after redownloading the old versions.