did you read the ending of FoE? Was good right up til steelhooves died, then all the chapters after that got more and more random/rushed. Was decent ending and overall a great story, but ending just felt "wtf is this....SERIOUSLY??" The whole red eye thing seemed like a cop out.
If you re-read PH, it's a lot better put together than you think. There's stuff in like chapter 3 that only becomes relevant in chapter 30-something. PH is much more intricate and deeper than FoE, and he's writing this out as he goes; it's to be expected that there's a bit of brushing he has to do after the fact.