Generally with games that were multiformat I've often got the PC version now anyway and so have, in effect, all but played the 'enhanced' version (1080p/60 fps if nothing else) and don't feel the need to pick up the more expensive PS4/XO equivalent.
With the Last of US I was more than happy to pay for (minus the £20 I got for my PS3 copy) play a game I thought was great all over again with improved visuals and some extra bells and whistles.
I'm not really a Saints Row fan (still haven't played III) but I think if I was and didn't have a games-worthy PC I would welcome this release. I guess the reason more games are being given the 'remastered' treatment is because they are proving profitable (as so many 'HD Editions' did last gen), which suggests that enough people do want them to make it worthwhile.
I know you know this already Rich but for me these fall squarely in the 'if you don't want 'em, don't buy 'em' bracket.
