Been part of BBTV for almost two years now and been pretty happy with them and what they have to offer. However, I don't know how they treat smaller channels. For example, we have highest possible revenue share and VIP partner manager who is able to answer any and all questions we have in a short time frame. They have a decent music library and dashboard is neat, but at the end of the day it all comes down to what you want and/or need from the network.
For a channel your size, I would recommend against partnering with anyone at the moment. However, if you are having issues with YouTube monetization, partnering with a network might be worth it for that reason alone. But keep in mind you don't want a long contract, preferably a no lock-in one and it's important that network has a proven record of payments being done on time and unlinking channels when requested (for example, Creative Nation most certainly doesn't, despite their very appealing 90-10% revenue share no lock-in contract). In your particular case it doesn't matter much whether you split your earnings 70-30, 80-30 etc with the network since your earnings are not high and if you have a no lock-in contract, you can always search for a new home with better revenue share later on.
Just to be clear, I don't like networks and this whole concept of YouTube MCNs because most of them are trash, especially when it comes to smaller channels. But what exactly is the point of your question? I can't figure it out whether it's just childish and stupid or you were trying to make a point that they should've noticed you when you only had a video or two uploaded with total of six subscribers? Pretty sure it wouldn't even be worth getting the paperwork done at that point.
There are different revenue share deals as well as CPM-based ones. Just as some networks offer 60-40%, some networks offer 90-10%. Bigger networks can afford to sign bigger channels on a basically 100-0% deal (unrealistically high CPM deal, for example you're getting $2CPM for years now and they offer you a $5CPM, so the only way they can make some money is if they boost your ad sales and make you even more money). There are also possibilities to get a sign up bonus, re-sign up bonus and so on.
I understand that most people don't understand why people join networks because they never got anything from it, but there are plenty of opportunities for bigger channels to get more out of YouTube networks as opposed to YouTube partnership on its own. This is why I'd like to go back to first sentence from second paragraph in this post - smaller channels should not join networks unless they have a good reason to do so. No network will help very small channels because they get nothing from it, sadly.