I don't know why some people are upset about the resolution being limited to Full HD. That was the state of the art at the time of release. GOG makes old games run on modern systems. If the game runs like this, there's not much to do.
I don't think it's a good idea to integrate community patches into GOG releases because they often introduce other problems.
For example, I've read that the resolution patch can sometimes mess up the game menu.
I don't think it's gog's job to solve this kind of problem, it's the publisher's job to release a remaster.
Moreover, I don't really recognize any striking visual differences between tvs with full hd and 4k, for example.
In my opinion, this is just a sales ploy to make more money because of a few more pixels that are mostly irrelevant to the human eye.