Here’s a link to another post with a pretty thorough breakdown of everything that’s wrong with the set.
The issues with the Troll set are more issues of missed opportunity since the Darkspear have some of the coolest cultural armor thematically speaking of all races. It’s not an inherently ugly set (except for the mask, and belt on the male). It’s more that there are obvious clipping issues and a few of the pieces are boring texture wise (boots,gloves).
There are so many existing concepts in WC3, WoW, and official Concept Art and Lore that ought to have been used instead. It’s no secret that Troll players have wanted epic back rigs with skulls and a properly fitted cloth mask and Rush’ka for a long time. (Maybe even a Trollish Glaive) This was kinda our shot to see that and it’s been blown.