Heya! Sorry for the delayed response.
Yes, to begin with, bulk end screen and card template were Star license features, as far as I know, they weren't part of the Pro license, never were but I might be wrong so we can get it checked in a bit.
Unfortunately, the above is indeed correct. Due to industrial changes and as well, changes in YouTube API have restricted our developers to continue providing the Star license features, which is why we have taken off the Star license, all together and we're working on something better for our existing license, that's Pro and Legend. We really understand how frustrating it is for our TubeBuddy users, and that's why we're doing our best to try behind the scene to see If we can find any workaround to bring back, but we wouldn't want to give our members false hope. Hence, it'd be fair to say that the chances of such a license being revived and put forward for usage are next to impossible at the moment. The features Bulk Find, Replace & Append, and Bulk Thumbnail Overlays are still available for your use.
As far as the new features go, yes, we're working on bringing up some latest features, such as Shorts Suggestors, which has been recently rolled out to our members for both the licenses (Pro and Legends), and there are more to come.
Trust me. We're all indeed disappointed with how things panned out as Bulk update cards and end screens were prominent feature Star license, but we have to adapt and adopt and move on to find something better as nothing last permanent hence, the only option here is to bring new features for our end users and behind-the-scene, we as will do our best to keep trying to find some workarounds but that's it...
Hope this helps