Not trying to start a war, the 1911 is a classic and a work horse. I like 1911s, and I actually enjoy seeing what different companies put out. The 100 years the 1911 has been around it has seen a lot of different changes, but none work as good as the basic design. Colt's classic design from John Browning is great, no need for double stack mags, front serrations, or picatiny rails, but the options are nice to have.
Sigs addition does look off a little, but as a gun and a shooter we should be open minded and just enjoy the experience of trying something and trying to master it. I have never shot or owned a Sig 1911, but I do own Sig pistols and they are great weapons.
Hopefully people can be open minded and understand that different people like different things. I have Colt and SA 1911 and I wouldn't mind adding a Sig 1911 Tactical Operations 1911 with a threaded barrel to my collections, but I got other things I want first. I got 2 AR projects I am planning out, barrel swap an AR I have now, and personalize one of my SA I have. So Sig can wait and hold onto their 1911 till I get around to it.