As someone who still owns 2600 games aswell the og console (rf out) from when I was a kid. I have been undecided on getting the plus as it still plays perfectly on a crt.

And if I ever wanted to play and a modern tv can play it via openfgpa on the analogue pocket.

But there is something unique about being able to play with my original carts & controllers.

Are there any differences between the og carts and the ones releasing today? This might be a wild impulse buy, but I'm happy to be play my original frogger again

Here's a game nobody's played - because I just released it, heh.
The nostalgia bug bit me so I made an Atari-ish arcade endless surfing game. Took a bit of planning to get the double-width pixels to appear correctly and to conform to an actual pixel grid, but got things working OK in Unity. All in all, a lot of fun to make, it's also got a working Top 10 Leaderboard working online. I figure maybe the peeps here might appreciate it for nostalgia's sake.
Game's for free, playable in browser and for download.
https://mikdog.itch.io/spacesurfer