Gunslinger will be updated only if someone comes and wants to do it. I practically never work on 3rd-party and homebrew stuff. Giant Options, like most UA, will not be added unless someone else either wants to do it or until an official version is released.

How do I implement the alternate Ranger Class Features from Tashas?

I can see that they are apparently included in the builder in your update list but I've searched through and can't find them. I even tried hiding natural explorer and adding them manually, but no luck.

Character -> Configure Hero -> scroll to Optional Rules -> check Always Show Tasha's Variants Tab. Go to that tab and activate whatever features you wanna use.

The beast of burden bootstrapped trait on mule doesn't do anything there is no script to increase the carry capacity.

That's a LWD error, as the Mule is from the SRD. I have a replacement ability coming in the next patch that fixes it.

I have my hands on the Spelljammer set and am digging into it. It's gonna be fun.

Except the Thri-Kreen. Those secondary arms are basically impossible. :(

I'm going to treat the Spelljamming ships much the same as the GoS ships. They don't have proper stat blocks, but will appear in your portfolio as a separate "creature", as it's the best way of showing the while vehicle with all its details. Of course, it's not a creature, doesn't actually have ability scores, etc.

I have to work within the limitations of HLC, and that's okay.

So jealous! I wanna look through that book so badly :p

So I've got Spelljammer pretty much wrapped up. Thanks to the whole Hadozee controversy, we've already got Errata released for the set. I've implemented it into the pack, so you'll be getting it all already errata'd, which is a first. I've gotta do a little bit of bugtesting/fixing, but then I'll get it out to y'all.

Yeah the glide fix was needed.