I was thinking about doing that. Is there a tangible benefit?
Most of the newer developed Roms, themes etc are becoming edify or at least edify compatible. The phasing out of amend only is in process so to speak. Like updates to our phones cwm has updates as well (better functionality, support etc) You will find that some flashable items are leaned toward using CWM 3.0 now, but I believe whether it is edify or amend it will work on the cwm 3-30 all fix version. The benefit would depend on if you're wanting to flash items that are more often edify to put it simple. As for other benefits based on functionality of cwm 3.x I'll let someone that knows more about it explain that. But as of right now you can easily stick with your current cwm or update if you'd like, as mentioned in this thread, switching back is as easy as reflashing the other version.