First I want to start of by saying its been great seeing everyone discuss this. While this thread is mostly about Zandalari druids I think a racial shapeshift revamp would be awesome for druids in general.
Okay now I get what your saying. To appease this Alliance community why not add the Wildhammer Dwarves and give them druids. Their land Travel Form can be a ram, their flight Travel Form could be a gryphon. Their Guardian form could be a more grizzly style of bear and their Feral form could be a lynx with all sorts of feather and braided fur on all the forms to really root them into the race fantasy. Giving Worgen a Pack Form (wolf) would also help ease this Alliance animosity.
Yes Glyphs are the perfect way to implement these additional forms into the game, I'd love it if I had access to some non-"big butt" bear forms on any race, even the vanilla model is more appealing to me than any off the ass-bears. I don't know why but when they updated the bear model they turned changed them from grizzly bears into black bear anatomy. I want grizzly bear anatomy back! Cats and Wolves have a bunch of various physical structures why is there only one bear model?!
Vanilla Bear
I see what you mean, I don't see a problem with Frenzied Regeneration but Tiger's Fury, and all of the fur abilities for Guardian druid would need a thematic name change but that doesn't seem like it would be a problem because Paladin's already have Summon Charger/Elekk/Sunwalker Kodo
I'm all for giving them glyphs to change their form or even a class quest to unlock other forms like the sleak cats from Legion or other raptors for trolls or kodos for tauren. Glyphs are highly underappreciated and could be expanded upon immensely.
Direhorns would be amazing and the armored ones from MoP as their Incarnation form would be icing on the cake.