Zyra is basically the namesake of champions who are hard to make skins for. In order to make an epic skin, which is the lowest tier of skin considered good quality these days, there has to be a lot of remodeling effort on all of her abilities. That's why she gets skins so rarely even though she's popular.
Now emotes on the other hand...well, I think that she could use a few. There could be some pretty nice plant puns with them too.
But she's pretty solidified in lore, with a full bio, a color story, and a longer story that highlights her far-reaching abilities across the jungles. The one thing she could use is a general explanation of her species, as the concept of the plant spirits in Runeterra is very ambiguous and diverse in all three of the current incarnations we see (her, Ivern/the God Willow, and Maokai). I suppose it's a reflection or an extension of their respective environments? The thing is, that confuses things a bit more since we don't know how Maokai could have reflected the Blessed Isles before the curse, because we have no idea what they were like (yet, at least; we might know soon if the next champion is indeed from Helia).
But I wouldn't say she's in a terrible spot regarding how much attention she gets. She just has an unfortunate ability set when it comes to skins. Champions with entirely particle effect abilities like Garen, Ahri, Ezreal, you name it, they'll always get more skins than champions with model effect abilities like her. It's simple, yet sad, cost-effectiveness.
