Well I suppose I can understand how you might feel this way, but the reality is you really shouldn't. Plenty of people who joined the game well after it's creation have found a place for themselves, it's really not so much a matter of having experienced MD from the beginning but of finding a way to express yourself creatively.
There is no chance that all the things you might think of have been done by some veteran before you, there is after all infinite possibilities when you use your imagination (of course I can't promise that the Simpson's won't have done it before .
Remember everyone started out with nothing to go on, which goes even more so for the few people who were here at the birth of MD, what got people to where they are was some work, determination, and more than anything they just keep coming back regardless of if they have RPC or PWD status.
And though there may have indeed be events which you may have missed there are logs of may of them lying about (and it sounds as though you are already reading up on those). Besides the future is sure to bring more and more Changes and Interesting things for years to come. Ideas come flowing in from everywhere, perhaps Most from Mur but Many creations and Events in MD have actually come from Players who thought of something to add and put their own effort into creating it.
And Above all else, remember the Journey is it's own Reward. Don't rush yourself into trying to become something, let yourself evolve into that which you already are...
(Ok I may have gotten a bit Cliche at the end there...)