I find civs with unique improvements, such as Maya, Morrocco, or Brazil, questionable as tradition. Those tiles tend to compete with specialists as your low food, high reward way to use citizens. Generally I find my capital working a specialist, a great person tile, or a high food tiles only. Its hard to find a chance to work Kasbahs. Brazilwood camps or Kuna can work because 3 food on jungle is alright, but now that forests don't reach 3 food ever its noticeably worse than before
The Netherlands weren't mentioned, but the UA works well with tradition and polders (as a high food UI) are excellent. The Celts with the border growth pantheon are another less conventional but overall very good choice.