mangos is not labeled as a (Place client name here) server, it is labeled as a general MMORPG server software. If you make a custom client, and instead of making the server fit the client, make this custom client fit the server, you would have your own genuine MMO, if this project is ever going to become anything more than a "server simulation" software, a client needs to be made so Mangos can be made around it. If you are buying the client at a store, you are just following the mob mentality of the rest of the mindless drones who play on the official servers.
HURRY UP WITH THE CLIENT