As MP3 said, I didn't meant to remove the ones we had, I meant to avoid adding new ones that would probably have useless tasks and would cause a disaster here. People join the LDC or an Art contest for a medal, yes, but this medal is worth getting as you know there is a certain judge that would choose the best, but a medal like "Get 100 thumbed up posts in serious dissussion forum" for example would cause chaos. I'd expect people to post a ton of stupid topics and then ask people "PLS CAN U GIVE ME 1 THUMBS UP :( I REALLY WANT DAT MEDAL IT'LL TAKE ONLY 1 SECOND PLSPLSPLS ;(". And that would ruin not only the reputation and the medal system, but also the quality of the forums. I do believe that getting a medal should have more serious tasks that people would actually put effort in, like they are doing in LDC, I doubt someone would post a 3 blocks and a coin level-entry and then beg for the medal. Even if I'm completely stranger to the LD stuff, I still strongly think people focus on the quality of their levels and put effort in them in order to get the prize.
Also some people are even post-counting just for the ranks "I RLY WANT TO BE CODE:AWESOME SO I MAKINGS LOTS O' TOPICS", now imagine if they'd be awarded with a medal for doing that, what would it be like? I don't entirely agree with the "Post X levels" or "Rate X levels" medals as I think some people do a quickly rate just to achieve the medal (about the post part, they need approving by mods so I'm pretty okay with it). Plus I think we have medals for every important stuff, LDC, Art (if still alive), Runouw Votes, Cookie and Bacon, Staff Member, and if you cared to check
the medal art contest (probably didn't as you are new, but take a peek) you'd see there are a few that are not even used so they might be added in the future. I as a member cannot find any other medal-worthy taks for the community. That's just my opinion anyway.