wait, you can get dragon eggs by voting?!? I didn't even know you could get dragon eggs in the first place, since the ender dragon was killed. Wow, I'm clueless. In that case, I agree there should be other ways to obtain these rare eggs.
SIDE TRACK IDEA: Maybe herocraft could create a dragon's lair on each map, where a weaker version of the ender dragon can spawn for heroes to battle. They could alter its could so that it couldn't destroy blocks and won't spawn as long as there is one in a specific area (which I know is possible to do, since they were able to take away creepers' block-destroying blast and TNT's ability as well) and the area would be protected, meaning players couldn't break or place blocks, just like in spawn. Now that would be cool.
Of course, the herocraft staff is already busy with their lives and careers, both virtual and real, and the chances of them actually seeing this message and agreeing that it would be a good idea is slim as it is, as well as if they would have enough free time to make it. I know personally how hard it is to juggle personal life, job, play time, and side projects at the same time. At the moment, my colleges and I are developing a game similar to the awesome franchise Fire Emblem, which is hard as it is, since we're all teens who have evil teachers giving us stacks of homework every night.
...wow, I get distracted easily