Is there any way to add a dynamic zoom option?

[sdspieg]

We love scattertext - many thanks to Jason for making this great tool and for continuing to maintain and improve it further.
For larger corpora it might really be useful if we would be able to zoom in on certain parts of the viz in order to see more labels.
I realize you answered before this was impossible, but I was just wondering if anybody had any ideas about that. Thanks!