Any how many exchanges have you both run?  If it's zero, then let's assume you aren't qualified to make such sweeping assertions and that Coinfloor are probably in a better position to judge the demands on their business than you are.  Almost every other post in this topic highlights the fact that this is a small exchange, which means they may employ only a small number of people.  They may not be equipped to handle frequent changes in multiple coins.  Whatever the case may be, it's ultimately up to them how they choose to run their company.