Not my favorite but it's up there. My top films are Jaws, Alien, Predator, Aliens, Saving Private Ryan, interstellar, the Dark Knight, Rocky, the Perfect Storm, Star Wars OG trilogy, and LOTR trilogy...okay there's a lot of others.
As far as the aging comments go, I lean on the opposite end that just because our FX have gotten better doesn't mean the Predator tech should reflect that.
The thermal and cloaking to me still stand because they still have an alien feel to it. I like how their thermal isn't crystal clear and cloaking is more of a distorted kaleidoscope. It makes their equipment advanced but vulnerable.
I wish they would bring back that laggy, hard to see thermal.
And multiple layered cloaking