We have to get Alfie and the Kumon people in a room and let them duke it out.

I think that especially for a gifted kid in the lower grades, lack of homework can be a boon. It frees up time for parent-selected enrichment. An hour plus of homework as a regular thing is too much per night in early to mid elementary IMHO. (I might feel differently if the homework was very engaging, project-based, etc. What it's been so far for us is standard worksheets, which DS blows through quickly, thank goodness. There are some writing assignments that I actually think he gets a bit out of, especially because he's up to two years younger than his classmates and doesn't write very quickly.)