Simultaneous Python 2 and Python 3 support.

In one of my projects I have a need to deploy to both Python 2 and Python 3 targets, making the 2to3 conversion solution rather painful. Would there be any objections to creating a polyfill (backfill?) for Python 2 for unicode or something similar? 

I couldn't find the full reasoning when this was discussed previously. Thanks for bearing with me.