It's nice to see that there's still people interested in the *original* XCOM games - and not the utter junk that's been released since TFTD.
Some 13 years ago (wow, time flies), I was delighted to see a Windows re-release of the XCOM games (the "Collectors Edition"), since the DOS version was indeed pretty troublesome to get running under Windows - this was before the luxury of DOSBox. However, the fine developers who did the port didn't know the difference between "pitch" and "width", and thus it was unplayable (on a wide range of graphics cards, apparently). I was put down by this, but my friend who was visiting that evening said "well, you usually fix... bugs... in programs, so can't you fix this?".
One frantic night of reverse engineering and beer-drinking and reminiscing about chryssalids and tentaculats laters, I had a bugfix loader running. XCOM once again! The CE port in general wasn't perfect, the XCOM1 intro only had MIDI music but not the muton screams and other sound effects, there were stall-for-a-second issues when changing soundtrack on many soundcards, et cetera.
When XCOM1+2 were re-released on STEAM, they initially used my bugfix loaders (I'm told they use DOSBox nowadays - that's a more authentic experience). Didn't even contact me about it. When I reached out to the people in charge (took a while, the rights to the brand had been shifted around quite a bit), I was told that the source code no longer existed - apparently, at the end of days, it had existed on a single laptop that had been stolen or destroyed or whatever.
So, with the above in mind, it's nice to see that people are trying to re-create the legacy of one of the best games I've ever spent countless hours with.