I already know you’ll never go back and kill anyone, because it already hasn’t happened. You can’t go back in time to do something you already haven’t done, otherwise you would already know about it having happened before.
Coming from a guy who’s been mapping for the better half of 8 years, and worked in a couple big-name mods, you really need to practice your mapping skills a lot more, and observe other maps to get a sense of how they come together. Especially when it’s just more Black Mesa.
I am actually not the mapper for the mod, and my mapper is quite new to Half-Life Mapping. Also it’s only the “introduction maps” that are actually maps so far, the map in the image of the houndeye or any other NPCs are just maps for testing various things.
By the way, the introduction map is still subject to change and was only whipped up in about a day or so.
I guess if you’re young and learning about modding, then you’d probably see it that way, but yeah, modders and mappers get hired plenty of times. It’s really not uncommon, and I’ve met a hell of a lot more serious mappers and modders than I have those who only learn it for fun.