Here is the thing, the people who want PVP are a very small, very vocal subset of the forums population, which is a very small, very vocal subset of the DDO playerbase. Making PVP 'worth using' for a very small proportion of players - who often have wildly conflicting views on what would fix PVP - is not worth the waste of development dollars.
My comment to improve PVP - log off DDO, log onto game which has PVP as a primary feature, PVP. This both improves your PVP experience, and the play experience of people who don't care one iota about PVP.The suggested changes will go a long way to improving PVP.
Comments from anyone to improve PVP in any form are also welcome.