My wishlist for DynamoDB is now down to:

* Fast one-time data import without permanently creating a lot of shards (important if you are restoring from a backup)

* Better visibility into what causes throttling (e.g. was it a hot shard? Was it a brief but large burst of traffic?)

* Lower p99.9 latency. It occasionally has huge latency spikes.

* Indexes of more than 2 columns

* A solution for streaming out updates that is better than dynamodb streams