I have represented myself, and whereas from legal perspective I was happy, doing probably a much better job than the lawyer would have done - frankly I do not understand why the lawyers even exist in simple family cases, there is however one major problem that I feel is happening.
In essence these cases are unrecorded. In the room it will be 3 v 1, and the Judge by pure peer pressure of people is likely to go in the direction of the other party, finding some red tape reasons to support them while appearing to like you (like congratulations to mr abc for exceptional representation of himself blablaba). This is especially true of the appeal case where it will be 3 + previous judge vs you.
You see its not only about the law, but also about the psychology. Lawyers can be very helpful, as can be Mackenzie friend, but this entire legal system is immensely peer to peer psychologically corrupt institution, so you do not want to be there alone, even if the case is yours and you are super smart.
I would change the lawyers, blame the previous lawyers for not outlining the case, agree to speak as much as possible in person to show your story, but keep the lawyers so that they protect you just by being the witnesses. Nobody cares about the justice.