Well simple answer to that. If we keep making new accounts to make more toons we'll start forgetting them overtime. After all we only have 4 email slots. That can also be said about buying plat. With the former 5 character price slots we can buy plat and use for ALL CHARACTERS we have on said account. By removing 5 plat option and making us make newer accounts would force us to have to spend plat on ALL accounts for gearing the toons up ( new faces, inspect page, elixir, respecs, ect) which nobody wants to do since it'll focus on only 1 ACCOUNT.