Add ability for User to Download lo-res PDF

This is becoming a big issue for our users. They have no ability to download lo-res PDF to send to their clients for review. We have the option to enable Proof & Preview PDF, however both options output hi-res PDF. Some of these are 40-50MB and take a long time to download and can't be shared with clients over email. Is there a plan to add this as an option at checkout or as part of the eDoc set up? if not PDF, maybe a JPG, PNG etc...? Thanks