I have a suggestion and I'm sorry if anything like this has ever been suggested, I don't have time to read through everything. Would it be possible to create an item in the DDO store (Blue Dopant or something?) that changes Bound to Character items to Bound to Account and Binds to Character on Equip? It could even be a rare drop, 20th completion reward, or favor reward instead of the lame +2 tome that most TR's would only convert into purifieds anyway.
Basically it would give you a chance to fix mistakes in gearing for a cost.
Again, sorry if this has already been addressed somewhere. Just wanted to throw it out there just in case.
(edit: just to be clear, this would unbind an item in order to switch it to the correct character where it can be rebound)