Oh zombie Rp's are out there and well in demand. I have one that has been going for years. As others have said, as far as an interest check goes, with most any Rp on this forum you will need to give people a rather well fleshed out idea, even in the casual section. General interest in a type isn't going to get you a lot of feed back unless you get lucky really. Even if it is a great idea, most will wait and see if you, as the GM, would put in the more long term effort of putting together a full interest check. Again, this isn't just for the advanced section but for casual and even Free. They want something to sink their teeth into.
While not always true the old saying - The more you give the more you get - is rather true around here. I will spend a good four to six months getting ideas fleshed out and an interest check for casual. Up to a year for the advanced section. (Granted, I go way over board on nearly every aspect of RP so I am not a perfect example but an example none the less.)
Give the Rpers something fleshed out with some details and then start a new check. You may have a bit more luck. Though that isn't always granted, sometimes it just doesn't hook people the first few times. I hadn't looked at your check until now but yeah, what BrokenPromise says holds true - there really isn't anything there. On top of that, your post count is so low with such an extended amount of time on the forum, that could factor in. Not that having a low post count should matter but reputation does play a part in some Rpers willingness to reply to an interest check. The lack of meat to the IC and the low post count is like a double whammy for some and they will just move on.
If you aren't wanting to start a true IC until after you get a few tugs on the line, you might want to post in the general interest check section just to see if you can get some interest in the topic.