As I'm not an end-game player...just casual...I may leave this weapon at this level. 20/20 is still a damned respectable ratio, and the stats at this point are decent. The real money is having that 175hp lifetap in there to compliment the 125hp lifetap I augged into this bad boy, and my healing and spell crit aa's as well as weapon affinity.
I've never been one to rely on procs for DPS, but lifetaps are all about survivability and reducing downtime for a Beastlord.