I really like this ideas, and i also have other things that i wish to get, like:
-Blowguns
I don't get why we don't have this yet for hunters, i mean... there are grey items for both Zandalari and Blood Troll blowguns!
-Survival Hunter with the option to transmog their 2-handed weapons, into 2 one-handed weapons (so we can all play like Rexxar, i mean... he's the character behind the fantasy for Survival Hunters!)
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Well if we go with those first:
-As far as i know, most Kultirans mages are frost mages (mechanic wise), but by lore they are Tidesages, so their abilities should be themed around water instead of just ice
-If i remember correctly, the Zandalari's Paladins are servant of the Loa of Kings, or the Tiger Loa (don't remember its name), so its abilities would have mostly that look
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Well... aren't Survival hunters that? in the end, even if they have 2 range abilities that are part of its rotation and the ability to turn their melee attacks into range (for like 20 secs), i wouldn't call the class a hybrid, as you still need to be in melee most of the time