This TL is still up for adoption. Although, if I ever do return to it, I am considering rewriting it. After reading a thread called 'As the Komnenoi World Turns' (and I highly recommend people look it up and read it) I realise I may have... misrepresented Manuel quite a bit, portraying him as a bit too squeaky clean.
I'm also thinking of another TL idea, based around a word prophecy like AIMA. Here's the basic outline:
Isaac II Angelos overthrows Andronikos I Komnenos, as per OTL, but the POD is that, somehow, the Bulgarian-Vlach revolt is put down, Isaac rules a bit better than OTL and is not overthrown by his brother. At the same time, he has at least one son by Margaret of Hungary and his eldest son (OTL Alexios IV) eventually becomes emperor without the Fourth Crusade. All the while, Andronikos's grandsons, Alexios & David Komnenos are in hiding, waiting for their opportunity to reclaim the throne.
The AIMA prophecy will come into effect once more with the Angeloi, but so will another word - Drasis, meaning 'strength, efficacy, action' (I can't remember which one).
What are your thoughts?