First thing to do, get your history right....the period known as "Medieval" was from around 1066 with the ascendancy of the feudal order. your timeframe (450 to 1095) is commonly referred to as the dark ages, and there are currently many mods tackling both periods, so check 'em out, get some good ideas coming, maybe try your hand at some map work, then show everyone what you can do..maybe then people will pay more attention to your mod ideas.

hope i helped :)