I don't think it's a "not ready" thing. If you would like to get a thread stickied then you have to provide something unique and useful to all users, something that is much needed and therefore should be at the top of the first page. As Cyan said, most of the threads that are created and asking to be stickied already exist somewhere else on the site. The search does work. I know that it can be hard to find the info you are looking for if you haven't been watching the front page every day but if you create a new thread you really should do your homework on the site first.Oh crap! On the link you gave, people really asked for "Nintendont directly from the Homebrew Launcher" or "Manga reader" (The Wii U have a PDF Reader already) or a "Recovery mode/Anti-brick" ...
You're right, GBATemp is not ready.