Interesting the idea to transpose for the Marozcy, also I am preparing the English pra to prevent the Benomi and the Benko and has variants that the blacks can transpose for the Marozcy.

But coming back to the projects of the King´s Indian, the blacks can opt to Bg4 with or without c5 and falling in other positions. What plain vocês suggest?

For example:

1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 0-0 5.e4 d6 6.Be2 Bg4 7.O-O c5