Is two weeks too much for Switzerland?
Two weeks is not too much if you want more than headline views. It lets you slow down in the Bernese Oberland, add Zermatt or Ticino, and stop treating Switzerland as a series of expensive day trips.
Answer
Switzerland has enough for two weeks, provided the itinerary has a rhythm rather than a trophy list. The extra time is useful because weather matters: a cloudy day in the Alps is not a failure if you have another morning nearby. Two weeks also lets you mix the obvious route with a different mood — Lucerne and the Bernese Oberland, then Zermatt, Lake Geneva, Ticino or Graubünden. What does not work is simply doubling the number of bases because the trains are clean and frequent. The best longer Switzerland trip spends more time in chosen places, not more money proving that the map was fully sampled.