Well, I've made a number of popular levels before, and while EotM is arguably one of the more popular ones I don't think it really compares to others (and certainly doesn't come close to semi). Basically, there are better levels out there, by other people and by me. I'm not saying it's bad, but I don't think it has what it takes to reach that amount of popularity.

I think the main reason for its current popularity is because it was included in the mappool (and specifically designed for) the JJNet tournament. Without that, it probably would have been overlooked, like most levels are. Good (albiet evil) level design also helps though.

I think it is a level which will be played for some time, but less and less as time goes on, and eventually it will reach a point where it is still remembered, but only played once and a while. It will be kept around for the occasional game, if only because of that pit...

On the other hand, I've been wrong about this sort of thing before (never expected helldome to be popular, although it too was made for a tournament, and like EotM it was very carefully designed). We'll see.