Ah I see, I didn't realise you could combine heuristics. I still think it would be cool if you could pick from multiple construction heuristics (shortest path,

Ah I see, I didn't realise you could combine heuristics. I still think it would be cool if you could pick from multiple construction heuristics (shortest path, farthest insertion...), followed by which improvement heuristic/s you want to use (2-opt, 3-opt...). The choice of which heuristics you use and what order you do them in is sometimes called your meta heuristic strategy.