What you are talking about here is basically the LOTRO (Turbine's other game) style of cosmetics which is what they should have done in the first place. LOTRO's system is without doubt the best approach to cosmetic appearance of any game. You can have up to 8 appearances defined - 1 based on what you are wearing and 7 cosmetic ones which can be configured using any combination of either looted gear, social items (from events etc) or cosmetic only items from the store. You start with 3 free cosmetic slots and can buy the others for 495tp each - these are purchased per account but can be configured independently per character. The cosmetic appearance has no impact on your stats and once it is defined you can sell/dispose/bank/whatever the piece used to create the appearance. You also have a wardrobe which acts like a shared bank but only for appearance items (again any combination of loot or purchased/social items) and again once an item is in the wardrobe you can get rid of the original but still use the appearance on any character.
This is the way that they should have gone instead of the blatant money grab of armor kits and there was no real excuse for doing it that way instead of learning from the LOTRO team. Having to buy a new armor kit every time you change gear just to keep an appearance you like is just silly. Putting one on a BTA set isn't too bad as you can reuse it on another character but otherwise they are just a waste of TP. Some allowances would need to be made for the fact that DDO bases your whole look on just the chest & helm/goggles pieces (LOTRO has seven pieces making up your look so you can mix and match) but otherwise the system should have been brought across as is instead of the useless one they gave us.
Personally disagree as I play my AA very differently. I stand as far back as possible and plant as many arrows as I can into my foe from a distance, preferably when they are in a position where they cannot get to me but even if they can they will normally be dead long before they get near. This one is a matter of play style so rather than changing focus perhaps make it work differently if you have the Shot-on-the-Run Feat allowing you to also gain focus when moving as well as while standing still.
So totally /signed. This is something that is long overdue
Champions Online has a similar feature (or it did have - not sure if it changed when it went FtP) where you could define three builds each of which had a different equipment set, appearance and (potentialy) power set. You could thus quickly swap between offence, defence, healing, support etc as needed based on your defined build. Best thing was that the equipment could actually be left in your bank and when you swapped your current gear was placed in the bank and the new gear appeared on your body - saved on time and backpack storage.