Allow different plan per domain on same account

currently you only allow a single plan to be applied to all domains within an account. Please change this so that each domain can be on a different plan. e.g. domain 1 (basic plan) doamin 2 (plus plan) Most of my clients are not technical or computer literate so have no interest in having their own login, I manage everything for them, so put all domains under my own account. But not all clients/domains need the same plan. Also even with having clinets on their own aoccunt/login, some have multiple domains. The primary doamin might need the plus plan but secondary domains only need basic plan.