I actually had the same exact discussion in Feralheart concerning RPs a while ago.
To be honest, I'm not really sure why some RPs become popular and others don't.
I've noticed in Feralheart lately most RPs in Fluorite and South Pole are realistic. I think this may be crucial on how the RP becomes popular. There are hundreds of realistic RPs, so maybe people think the "story" is overused? I rarely see unrealistic/semi-realistic RPs in Feralheart anymore, and I'm going to use The Ebon Circle as an example.
In my opinion, the Ebon Circle's plot and whatnot is very unique and exotic. Not every RP can you be a Kreptis. Right there probably makes people want to join.
Activity can also count for a successful roleplay. (Correct me if I'm wrong, but hasn't TEC been around for more than two years?) TEC has had much more time to recruit and has gained members who also probably ask their friends too.
I've also noticed mapped RPs aren't as popular (That I know of) as they used to be. This is probably due to that they are scared of getting a virus, don't know how to install, or they just aren't allowed. Those are the most common reasons I see people not joining mapped RPs.
(-done with random rambling-)
...
Anyways, I'm sure if you give your RP sometime, you'll defiantly find more loyal members. ;)
I know the feeling quite well and I share your pain. It took me months to get it out(with school, sports, and academic studies piling up) and nothing! Though, I must keep in mind that it is merely a forum role-play and not as direct as Feral-Heart is in gain members and I should definitely try a bit harder with getting it out there...
But, most of that doesn't apply to I suppose. I would say, and you may not like my response, keep up and trying. Once you get the first few, it gets easier in mass recruiting sessions.