Emissary35
Well, I am thinking that some of the newer devices in development are more likely to have Bluetooth built in (like some of the currently available models) which will allow earbuds/headphones to simply connect to the device rather than the remote.
Although I rarely use Private Listening, when I do, I just use the Roku mobile app. (my cellphone is a much better device for this than my older non-rechargeable remotes with the headphone jack). One of my cell phones that I use with Roku still has the 3.5mm jack so can connect both wired and wireless earbuds/headphones to it.
I repurpose a lot of older equipment to supplement my streaming. I can't expect Roku to satisfy my every personal need, so I take advantage of what they do offer, and then figure out a way to customize my setup that works for me.
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As for the Guide button, I can see that as quite useful for those that use the Roku Channel LiveTV. (am assuming reserved solely for Roku Channel, but not sure). Additionally, only so much real estate on the current Roku remote design so something had to go. (1 of 2 programmable shortcut buttons).