I think they’re great. It helps if you’re willing to remap buttons and use the gyro.

Biggest hindrance is if the anticheat is compatible with the deck

And for extra info, almost every other device (especially phones) will just say 100% in this case to avoid confusion.

512GB internal is a lot, and your upgrade would only get you an additional 500GB. I would definitely add a 1TB SD card first, and upgrade the internal sometime later if you really need it.

Get an A2 speed 1TB SD card, and performance will be identical for 95% of games. You might notice slightly longer load times, but the games will still run the same. If you’re running the latest games that require SSD speeds, your internal storage is still there.

I personally have a 256GB internal and 2x 500GB SD card and my only regret is not getting a single 1TB card.

Not a direct comparison, but I found the exploration aspect of BotW surpassed by outer wilds. Especially if you like the theme of camping in space and solving a mystery.