That observation is correct. Currently, people misuse stream processing systems like Storm and Samza for data import/export. This is an overkill. Kafka Connect is focused on providing scalable and operational connectors to various systems using Kafka as the underlying transport mechanism.
We have built a fairly robust system along the idea of Kafka Connect and it's open sourced at https://github.com/flipkart/aesop. Currently, it supports MySQL & Hbase as sources and MySQL, Hbase, ES, Kafka as destination.
Anyway,Kafka Connect will provide what probably most people are looking for in Samza.