I was talking about private servers advertising, which is quite common and do not require to draw the attention of the retail players but should be directed to the private servers community, outside of Warmane. Most of the retail players, being twich streamers, would be banned by Blizzard if they play here. Bajheera has been hired for a Molten Tournament but that was years ago and now Blizz has taken some more serious actions against the private server community.
I know that the quality of the scripts is an objective factor you should consider while choosing where to play but, as far as I know, both wotlk and mop realms are quite well scripted here, so this specific factor would not encourage wotlk players to play on Frostwolf. Be patient, all the efforts you are putting on this project may pay off someday. By the way, you are comparing yourself with Icecrown and Outland realms, which are by far some of the most populated realms in the entire private server communty. So, to be honest, Frostwolf is not really so low populated. That are other private servers out there, running different expansions, with more or less the same population and people still find them enjoyable. Consolidate your gaming community and have fun with it but do not take this too seriously.