The difficulty of the Genesis game frustrated me as a kid, but the overall vibe of the game, with its eerie music and setting left a lasting impression on me, there really wasn't anything like it. And then years later, as a happy Dreamcast owner, reading previews of a new Ecco game, in 3D no less, re-ignited those feelings the original gave me. I was floored once I got a copy to play, the game was (and still is) gorgeous with music matching the visuals. Sadly I couldn't beat it (I got stuck at the large alien head near the end), but what a journey!
I will happily Day 1 a remaster of the Genesis games. But I'm really curious how they will update the visuals and sound as those two aspects will be critical to its success. The concept/universe of Ecco is so unique that its a shame Sega won't take a risk moving the franchise forward. Hopefully this is their way of checking who's still interested. I know I am!