My TV is a 43" HP Monitor. Some things just don't work right. The Roku cannot turn off the display like it could my old television. Since the monitor has no speakers, I have to use a soundbar but the Roku remote cannot adjust the volume so I have to use two remotes. None of this is a big deal to me but it is not seamless.
I have a Roku Ultra LT, and the remote has an IR blaster. I have it control TV power and sound bar volume via IR just because it's more reliable than CEC. It is seamless for me. Perhaps you could upgrade to the higher end remote?
You may be right. I am on the Roku accessories page and it doesn't look like my remote is even sold any more. Mine is the voice remote with headphones but it does not have the two shortcut buttons.
I got the Roku Ultra LT back in November and I vaguely recall only spending $40 for it new. It looks like just the remote it came with is $40 now! Might be worth picking one up on eBay or something?
You have an 80” monitor solution?
Projector
I think this is probably a valid solution in many cases.
However, it is not a computer monitor, which is the explicit item at question here.
80” is a marketing solution in search of a problem. Read a book.
Books are a marketing solution in search of a problem. Watch a movie.