Skill: Productivity/Munchkinism. Not giving up in pursuing a difficult worthwhile goal, always acting on the best available plan, including the search for a better one. Ability to convert additional time and resources into additional (if slow) optimization, as opposed to wasting them.

Subskill: Creativity, ability to generate new prototype ideas and refine them, modifying and combining known things to gradually reach into new territory.

Subskill: Scholarship, ability to collect ideas and skills from elsewhere, for future use as building blocks for your problem.

Subskill: Optimization of own activity. Creatively looking for better ways of doing things instead of only following a fixed routine. Improving effectiveness of the routine past the point of satisficing a "reasonable" level (where that's consequentialistically helpful).