Right, this play created quite a stir in the Harry Potter world as many fans hated it. Well, I started reading it with the same expectations but I have to say I did enjoy it. Ok, Harry had to grow up and of course have certain concerns and parenting was never (and never will be) an easy task, childhood heroes grow up, except I guess a lot of fans were not ready to see it. Some books or stories are better left to fans' imagination, that is why sequels are usually pretty bad. 
 Ok, back to the main point, the story itself was actually pretty interesting. My only criticism here is the number of scenes, I found it switching around too much. It would be better carried out with more dialogue in my honest opinion. 
 Lastly, Albus was not really a protagonist in my books, without Scorpio I found him with very little depth. But then Scorpio did save the day. When I have some time I'll check out the play itself to see how they carried the scenes out.