They could add the ability to have more gigs per level or more levels and change the evaluation requirements.
Add an option where you could try out different gig ideas without it affecting your stats (like the gig is in trial-mode but people can still order it, maybe without the ability to leave reviews).
They could make the requirements section for an order better by allowing questions to be asked only if certain conditions are met. eg. have the ability to only ask the question if the buyer ordered the premium package or the standard package. Or only ask if they’ve selected a package or something that contains x. Or only ask if they’ve given a particular answer to a previously asked question.
Maybe allow for more modes within an order eg. a bit like milestones. Maybe there could be a draft stage.
Maybe allow those who don’t have a gig in a category to see buyer requests in that category eg. it might help them decide whether to create a gig in that category.
Allow sellers to create gigs with prices or prices for extras that aren’t multiples of $5.
Allow more than 3 packages or more complex or automatically calculated gig pricing (such as gig’s pricing having the ability to be calculated based on duration/number of frames or other parameters).
Maybe better/more intelligent limiting of orders in the queue.
Have cancelled orders not affect the seller if they aren’t the fault of the seller. Maybe have something which can stop buyers from changing an order (in a revision request) to something totally different than the requirements/what an offer was made for.