Thanks Lyndel! Great point.

Here's a list of equipment and what I am looking to do.

Denon AVR-X4700H - IR via RFX9600
LG OLED C1 - IR
Marantz Projector - RS232 via RFX9600 (This will soon be replaced with a JVC DiLA
Lutron Grafix - IR via RFX9600
Sony DVD UBP-X700 - IR
2 smaller Samsung TVs on either side of the LG TV
No Hassle 8x8 HDMI Matrix - IR or RS232 via RFX9600
Roku - IR via RFX9600 or TCP
Firestick - ?
Google TV Chromecast if possible

For Watch Activities

Watch TV via Firestick
Watch Roku
Watch Google Chromecast
Watch DVD
Watch LG TV with surround Sound

Would like to be prompted which display device (TV1 - Samsung, TV2 - LG, TV3 - Samsung, or Projector
No Hassle 8x8 Matrix will need to select the right input and outputs based on selection

If Projector selected, would like to dim lights via Lutron Grafix

Also would like, but not crucial, to be able to swap what's playing between TVs so assuming TV1 is playing Firestick and TV2 is playing Google Chromecast, swap Chromecast to TV1 and Firestick to TV2.