With well over a million copies moved, this is the first time this particular criticism has been levied, and as for the ending being rushed, that is patently untrue. (our final content update dropped yesterday).
I normally welcome constructive criticism, but a quick glance at your post history suggests you spend most of your conversations reassuring everyone you're the smartest guy in the room, so instead I'll thank you for your contribution to this thread and wish you the best!