I think bundles are a horrible idea. If everyone created a bundle it would make the buyer experience even harder with more options to go through before settling on something.
Plain bundles of existing items should be removed in my honest opinion. If envato wants to allow bundling of existing items they should offer a discount for buying multiple items at once, and not let authors upload a new item to flood the market with discounts.
390000 existing items and 130000 audiojungle authors. If every author made a bundle that would be an extra 130000 items for buyers to look through before finding one suitable.
Madness