First of all, it isn’t particularly the Dryads, Branchwraiths, Branchwyches, Treemen or Kurnoths I dislike so much - Dryads, Branchwraiths and Treemen are Wood Elf models, which I do like, while Branchwyches are based on Dryads and Kurnoths are based on Treemen - indeed they would make good Tree Kin proxies. As
@Aginor says it is more the Revenants and Drycha I really don’t like. They not only look hideous, but their mutated Tree-Elf look is pretty inconsistent with the image of the rest of the army. In fact in my view they would look better as part of a dark, Chaos version of the Sylvaneth, a bit like the Satyrs in Warcraft III are twisted parodies of the Night Elves, as mutated troops are Chaos’ speciality, not Order.
Also I dislike Alarielle, it is true. The beetle is fine, in fact if the beetle was on its own I would be pretty interested in owning one myself if it wasn’t so expensive, but the fact that Alarielle is there too puts me off. The main reasons for this are that firstly in my view Alarielle was a pretty bland, boring character in Fantasy, especially as she only got a profile and miniature (and not a very nice miniature at that) during 8th Edition. Then when AoS came along, GW had the perfect opportunity to resurrect some of the best characters in Fantasy in brand new, awe-inspiring plastic forms - true legends of Warhammer that have been around for donkeys’ years, such as Kroak, Gor-Rok, Chakax, Ungrim Ironfist, Thorgrim Grudgebearer, Skarsnik, Settra, Queek Headtaker... the list of truly badass characters was endless, yet they instead chose to resurrect her of all characters. Secondly, it doesn’t make sense that she becomes queen of the forest spirits if you look at everything pre-End Times. Alarielle was queen of the High Elves, in fact Everqueen is the title of the High Elves’ Queen, and yet she suddenly abandons her kin, indeed she abandons all Elves in general, and she goes to rule the Forest Spirits. Would she do this? Not likely. It would have been more likely that she had been a queen of the Light Elves, i.e. Tyrion and Teclis’ High Elf Remnants. The true queen of the Wood Elves in Fantasy was Ariel, wife of Orion, who seems like the obvious choice for the Goddess of Life in comparison.