A quote from the 'Identity' page on the website under the heading 'Future Plans and Ambitions':
"Our main future goal is quite simply formulated, to become the biggest and most popular Minecraft community and server in existance. We want to be able to offer everyone any form of entertainment they could look for on Minecraft.
This can be seen in our desire to expand further into the Minigame universe, including game modes such as skyblock, hunger games and many more. Not only the Minigame universe will be expanded. We are looking forward to adding creative building opportunities, expanding to more roleplay settings and different grades of roleplay strictness to appeal to more target groups.
Summarized, we want to appeal to as many people as wide and as far as possible to offer a full, fun and rich entertainment experience. Despite this direction however, we want to preserve our original guiding principle. Quantity in MassiveCraft, shall never becoming our primary Quality. We always strive to maintain our high quality expectation of the MassiveCraft Team, the full Complete Accessibility principle and striving to be among the players, instead of above them. This way we strive to not only be the best Minecraft Community trough the servers and entertainment we offer, but also offer the best Quality of Team Management."
Plus, minecraft is a game you play to enjoy the features it provides. Most of the roleplaying in minecraft is done standing still and talking. Making a server that is strict rp only wouldn't be very successful, (maybe it would?) and massivecraft really isn't the place for it. I like the idea of a Roleplay world/map that you apply for. Then rp'ers can be happy there and not have to worry about noobs. Or even a party chat function so rp'ers can make their own chatroom and ignore other chats.