At this moment you can't move money or items to different shards, so as long as they are not going the merge the old shards with the new, I don't see a problem with that solution. It is possible to buy AD with the zen you made by selling AD, but on the new server there will be less AD going around than the current shards,…
Astral Shield is working fine for me as a temporary fix to the broken threat. The game mechanics are far from perfect I agree, but at least we have to do something instead of just standing on one spot casting healing spells. Especially the dodging is just part of the game, this should stay needed in all fights, PVE and PVP.
They should just open a new server at release, that way people can make the choice if they wanna start clean or not. No discussion or ethical bs required.