"Too wide" is in the eye of the beholder. I typically sit eight feet from a 130" ultra-wide projection screen. That felt enormous the first time I used it, but after a decade it seems "normal" and I occasionally think about going bigger.

I think generally as you move up in quality/performance the app stuff drops away. Epson for example has a bunch of sub-$1500 "streaming" projectors, but as you move up into the more purpose-built "home theater" models that quickly disappears in favor of things like higher contrast levels and motorized lens/shift memory.

Yeah, I have 11.1 with sound treatments and a receiver that does room correction, and some movies are just annoyingly mixed. Dune (2021) has the voices mumbled and so low that when I turned it up enough to hear them it caused the explosions to be so loud that my cat jumped off my lap and ran out of the room, which I don't think he's ever done before.

Christopher Nolan is probably the most infamous offender; he's said even other filmmakers contact him and complain about his mixes. It's apparently how he wants it to sound, and he's said things like he sometimes treats dialogue as a sound effect and mixes it low on purpose, despite the many many articles and such about how much audiences hate it. I could swear at one point he even countered with something like "you shouldn't need to hear all the dialogue to understand what's going on". Ugh.

Some models include a carrying case, but I'm not sure I'd describe them as "very portable". For example the Glove80 has a hard-shelled case, but the case itself is probably bigger than most laptops. The Moonlander packs smaller into a soft case that folds like a wallet, but it's less protective.

There are designs with far fewer keys that could probably be carried around more easily, but then you have to learn their layer/chording system.

The Svalboard has an extra issue that some folks prefer it to be placed below desk height, such as attached to a chair or sitting on an under-desk shelf, so it's not something you can generally just put on a table in front of the computer.

You could also inherit or be given the property. The HOA and related things, such as requirements to maintain an existing easement or private roadway that crosses the property, would normally be part of the deed/plat and come with the property without you ever having to formally agree to them.

I went from an Advantage 360 to the Glove80 and I like the thumb clusters a lot better on the Glove80. In addition to having more keys, I find I can reach all of them without having to move my hand position as much.

Svalboard can have various kinds of pointing devices integrated into it, within reach of your fingers without having to change your hand position, but it's a pretty extreme keyboard design even by modern standards.