Multiple routing paths

This is just an idea to take the smsframework to another level. I ran into a problem where by I needed to have two clickatell accounts - some background, most of our users were Australian but we do have a reasonable number from New Zealand and also a handful from other countries or some that travel to other countries.

The problem was that in Australian when people port (transfer) their number from one carrier to another it stuffs up clickatell's ability to route calls and they had to provide us with an account that gets around this problem but only works for Australian numbers.

I have also help launch a new site that is specifically for the US market and Clickatell has the ability ot setup a US profile account and get cheaper rates. The problem is there may be a few users from other countries as well.

I can also see a need to use a more expensive sms services where you are wanting a higher level of service for certain users of the site, or certain types of messages.

So my ideas was that rather then just have a page where you have radio buttons to select the carrier to use for all messages, what if you could dynamically add carriers to this list to allow you to route messages based on certain rules.

When a message is sent it goes it would go down the list and finds the first router where it matches its rules.

The rules could be based on:
* country code
* user roles
* days/times

Each route would specify a carrier and account to use.

What you would end up with is a module that allows for a range of user configurable routing options.