I'm of mixed feelings about this.
1a. I'm interested in seeing DDO finally mainstreaming with adding physical/ranged 'power'. I've always thought that the often complicated rules of D&D turned away new players due to them not having a pre-understanding of how D&D works. Go into the harbor and you'll most likely see somebody asking if XXX stacks with XXX, etc.
1b. This is a lot of work. The code is already a complete mess as it is, and you're not going to retcon previous items. That's going to make an even bigger mess. If you can't keep it simple, don't do it, or it's going to be a nightmare.
2a. I love the new changes to make heavier armor and shields useful. I simply can't wait to dust off my shield PDK and get him ready to play with his new toys.
2b. Haters gonna hate. The lack of evasion with certain shields is going to greatly irritate a niche group in the game (of which I don't belong). I also wonder about the implications of the PRR/MRR limitations concerning shintao monks, which are essentially tanks. I fear this is going to truly hurt pure monks more than the splashers. The 100 PRR limit is already going to nerf my pure 20 shintao tank because he already has almost 130 PRR.