What would be the lift to apply the Streamfield approach to regular fields? 

I'm still digging into understanding the source code overall, and I've been wondering how possible it would be to add a personalised element to non-Streamfields? Is there a smart way that could work field by field, say for an Orderable? Otherwise I could see at the page level handling which fields get passed into context to be rendered, but that seems redundant with what this library does. 