Users currently using the REST interface do not have a way to ask for multiple rows within one http call.
For my use case I want to get a set of rows that I know the key before hand. It's a very small percentage of my table and may not be contiguous so the scanner is not the right use-case for me. Currently the http overhead is the largest percentage of my processing time.
Ideally I'd like to create a patch that would act very similar to:
HTTP/1.1 200 OK
"Rows":[ << Array of results equivalent to a single get >>]
This should be pretty backward compatible. As it's just making the row key into a query string.