I haven't been responding because I've been hard at work implementing many of the awesome suggestions here. :)
A big update just went live (and you can read about what all is in it here), but I've also been super looking forward to being able to quote everyone here and say "DONE!".
So here goes! :)
Under Creatures, I hope it gets the same taxonomy features as Flora soon.
DONE!
Might I suggest that the birthplace dropdown be changed to select town pages rather than the current location pages?
You can now link birthplaces (and a few other existing fields that refer to a town) to either a location or a town. They're treated as separate fields currently, but I'm hoping to let you choose your own link types very soon which should clean that up nicely.
an option to add friends who aren't "best friends" or rivals who aren't necessarily "arch enemies."
I have some characters labeled as "best friends" even though they'd just be…ordinary friends.
Characters now also have a link for "Friends" and a link for "Enemies", alongside their existing "Best Friends" and "Arch-enemies" links.
Dividing Produce into "Edible Parts," "Medicinal Purposes," and "Material Uses" would be nice.
I left individual fields for nuts/berries/etc to accommodate weird plants on other planets, but I did go ahead and add a "Material Uses" field to all Flora.
I'd think it'd be cool if there was a vehicle pages. Like for Scifi you got spaceships and walkers and stuff and for modern you got stuff like bob's car. Fantasy could use it too for stuff like ships or chariots.
These fit well under the new Technology page. :)
Pinning discussions to the top of forums to make them noticeable.
This was a great idea, and done. I plan to do a bit more of this soon, as well.
Also could there be a user dropdown for the Magic or have a magic user option in the characters section?
You'll now find a magic link for characters in their Nature section.
A change made to the Groups, so that creatures can be added
DONE!
I can see the merit in someone needing a taxonomic rank: domain, kingdom, phylum, class, etc. (although I've started adding those manually in the category customisation)
Done (with the second half of browsing each group coming soon).
A section for Governments might be good.
Very much done, with tons of awesome fields and associated writing prompts. (I love this one.)
There's lots of other cool new stuff sprinkled around that you might find, too.
(And, if I didn't get to your specific suggestion yet, that doesn't mean it's not coming. I only have 24 hours in the day just like you! :) And as for all the suggestions around editing fields: that's my next project.)
Happy worldbuilding, everyone!