Needing a network is like needing another hole in your head. I do not understand what benefits you actually get other than saying "hey i'm in a network"
Took the words out of my mouth, why in the world would anyone want to join a MCN? After Google takes its cut, the network takes its cut and you get your contractual slice of a slice of the pie you worked so hard for.
And for what exactly?
Royalty free music? You can get these sound bits anywhere, even YT's creator studio offers sound bytes, themes, songs, intro music and much more not to mention you can always ask an artist on YT to hook you up (which is what I've seen a lot of people doing, especially in the techno and dubstep genres).
Advice? Come to this forum, you'll get more advice than you can handle. In addition to a vast community, remember YouTube alone is a network of its own, and you're already a member!
Higher CPMs? You wish, not only do they fluff about "getting advertisers" and skeem off the top but the whole notion of signing advertisers specifically for your videos is a complete joke. YouTube's own creator blog and Google Hangouts groups laugh at this.
Tracking your performance? Hello! We have Analytics! Creator Studio is better than ever.
Payouts under $100? Well if you expect to only earn $99 or less, you shouldn't really be networked to begin with. The only reason you probably are is because you took the bait to this pyramid chain and the reason you aren't earning is because you're practically giving it all away.
Customization features? YT now naturally gifts you the ability to customize your channel in every which way possible. A little Photoshop knowledge can take you a LONG way.
You might read my post and say "wow he is a hater!" Truth be told, many of my pals got burned by networks and many networks attempted to claim my channel by trying to mindfunk me into signing an agreement to give me not only what I already have, but ask me to basically give them my earnings just for the peace of mind that I am a part of a "network". I'm no hater, I'm just a realist, I think networks burn you hardcore. From the complaints I've read about networks on this forum I'd have to say the whole "set it and forget it" network agreements are made solely for the benefit of the network. I hope people realize this before they sign up and whine about how to wiggle out their contract before its too late.
Remember, YouTube alone is a network; and you are a part of it already. Do your thing!