I'm not really sure how to turn this into a discussion topic without forcing it but I thought I'd share something that I (mostly) like in modern gaming. Many classic games have become significantly more portable through reimplementations. The big example being, of course,
ScummVM. I've not actually used ScummVM all that much but I'm always amazed when I look at its download list. I don't even know what a "Tizen" package is! (Turns out it's some variant of Linux, I found myself compelled to check)
What I have used is ResidualVM (a play on "Residue" as the engine it primarily reimplements is the GrimE engine). Being one of the lucky few with an original copy of Grim Fandango it's a joy to be able to play it on Linux, OSX, or whatever else.
I even had a go at getting it compiled for the Raspberry Pi!
Something I've considered playing with now that it's reaching a level of maturity is
CorsixTH - a reimplementation of Theme Hospital. This brings me to another point - reimplementations can introduce stuff that was either left out or not planned for the original. The ability to have the game remember which extras the player normally adds to a room being an excellent example. A map editor being another!
There's also the fun option to replace the original graphics. I'd probably stick with the originals but the option to change it up can be fairly handy as time goes by and low-res artwork becomes a style choice rather than a necessity.
Admittedly there's also bad reworkings. I bought
Tony Hawk's Pro Skater HD in the hope if getting a polished experience. Instead I got something built in the Unreal engine that seemed to have been created by people who hadn't played the originals. There's even purchasable DLC (and not cheap compared to the base game - £3.99 vs. £6.99!) to add back in the revert move that was introduced in THPS3 (allowing for much longer combos). Ugh.
There we go, have a topic.