OK, that's understandable... and still an improvement, since MMS was previously ignored (+ I don't receive many, and HeyWire-to-HeyWire MMS works perfectly). Two thoughts come to mind, if you think either is worth further consideration:
Offer the ability to configure an email address for MMS in addition to
the forwarding number used for everything else. If it could send SMS notification of the email (or as it currently does), it would be icing on the cake!
Your idea of upload to cloud... offer a user config option to integrate with Box, Dropbox, etc. I use several apps that work this way now (e.g., JS
Backup, OfficeSuite Pro).
Thanks for your continued interest and support. Happy Thanksgiving to you and yours!