For those who care, this is why I tend to dismiss mash up, mess up and retexture mods for Half-Life.
My primary argument is that it's not a mod, it's not even an expansion. It's Half-Life with coat of paint. In some cases I can hold up my hands on honestly say that it is a particularly well done coat of paint.
My issue is, as much as I love Half-Life, I've been playing it for over 15 years. I've seen it all. I won't enjoy it any more by running through the same game with new sounds or models. I definitely won't enjoy playing through something that you think is hilarious (speaking specifically about mess up mods now).
That said, I started editing Half-Life skins and sounds back in the day, it's how I got started with making changes to the base game. I'm not saying stop, by all means stick with it, but you don't have to put it online. If you do, don't be surprised if you get backlash from a few people.
I have made thousands of tweaks to Half-Life through the years and you won't find any of them online. They were purely for MY amusement. A lot of it would make me cringe if I look back at it today.