Also, the biggest thing missing for GURPS is a clear, quick, concise NPC Stat block that's easy to use and visually appealing.
Consider
this example from D&D. At a glance, I can find every relevant stat. In contrast, finding relevant stats in the text-only stat blocks of GURPS isn't so straight forward. If the attack is a power, it's under advantages. But if it's a weapon, it's under equipment or in the character description paragraph above (See "Lair of the Fat Man for an example of what I'm talking about). I think a clear NPC character stat block would go miles towards making GURPS combat more appealing.