Suggestions

DigThePit

Just give top 1 a good price, top 2 less and top 3 less too. It will make it more competitive and popular as not many people participate. I believe that it will attract more attention. I am talking as a perspective of some one who gets 1st constantly but gets 1 or 3 vkeys. Yes I get leg keys some times but rarely 1, 2, or 3 vkeys just aren't good enough.

Wandering trader buff

Instead of the trader selling useless vanilla items like vines or sand for 5 emeralds, change their trade table to offer rare survival necessities using NeoSurvival currencies (like Shards or Emerald Blocks). They could sell rare saplings (like Mangrove/Cherry), Budding Amethyst blocks, or even wands and spawneggs.