i’ve followed this model and put it into experimental operation on the r/ethtrader subreddit. in practice, a 1 hour countdown begins when a market flips to “rejected”, after which the post is removed and would need a flip back to “supported” to reappear.
the main problem i can foresee is the incentive to open the market in the first place. the vast majority of rejection stakes would go uncontested because they’re simply dealing with spam. yet these still have a cost. possibly a solution is to maintain a pool of funds to compensate for these, mainly gas costs.