I understand there are other Alliances to such an effect, and look at the state of things--stagnation. For things to move forward there has to be a change of ideals. That said I am not condoning RP, but merely stating that there needs to be a reasoning behind it, a purpose that makes sense in regards to what MD is. And for clarification, there are Alliances, and then there are Guilds, guilds are the ones with coded purposes.
Just because something else exists does not mean something else should, MD is about that unique set of perspectives, if there is a reason behind it which there usually is (although may have been lost over time--which is another discussion all together) then it is fine so long as it sits grounded in the foundations of MD. As Dst pointed out, you do not need an alliance to RP.
There is nothing wrong with having fun, but an alliance is making a visible impact on the realm, therefore must have a purpose. An alliance that has lost or blatantly failed its purpose should not exist, case and point the Necrovion Sentinels.
I would like to see this succeed, but it has to be for the right reasons. (publicly or privately)