I didn´t know the "adds x% to elemental damage" was also a bug but thanks for acknowledging this issue. I thought elemental damage was intended to benefit from both affixes ("+x% damage" and "adds x% to elemental"), but I guess you originally had monster resistances in the game so that´s why you made them different, the bugs just made the two weapon types uneven.
I understand that it´s difficult to change damage values on weapons because it would also change their value and probably upset a lot of players (like it did with the early IAS change), it´s just that in my view a bug is something that should be fixed if it was not intentional, no matter what.
Anyway, I´m looking forward to the patch when you introduce the new items without the two bugs you talked about. Good luck with the changes and balancing them out. I´d gladly help with anything related to improving the game like class skill revamps and itemization.