I cannot understand why you would remove other different and complementary products after adding a PPT product? As the basis of operation of each product is different why not see them as complementary?
Acoustic treatments such as HFTs, Atmosphere etc affect the room, which is not anything the PPT products touch. Grounding solutions provide a common ground for all elements in the system, again nothing anything from PPT will affect (although the Gate may affect the overall ground you still need all components to share that).
The only exception might be power conditioners and the Gate, but even there one acts only passively while isolation transformers and most conditioners act on all legs of the power and provide additional benefits.
All of this is to say that in my system which includes all of the above, the Gate provided an incremental, and clearly differentiated, benefit strongly suggesting that it is complementary rather than duplicative.
Acoustic treatments such as HFTs, Atmosphere etc affect the room, which is not anything the PPT products touch. Grounding solutions provide a common ground for all elements in the system, again nothing anything from PPT will affect (although the Gate may affect the overall ground you still need all components to share that).
The only exception might be power conditioners and the Gate, but even there one acts only passively while isolation transformers and most conditioners act on all legs of the power and provide additional benefits.
All of this is to say that in my system which includes all of the above, the Gate provided an incremental, and clearly differentiated, benefit strongly suggesting that it is complementary rather than duplicative.

