We are also very interested in this feature. I have tested your suggestion (1 (a)), and it looks to me like what you are doing is replacing your own e-mail address with another one (a distribution list, for example). That prevents you from subscribing to anything else on that site with your original e-mail address (you can only have one e-mail address stored in that site for alerts), and forces you to maintain many different DLs for each occasion.
Is my understanding of what you suggested correct, or is there something else we could do? Just wanted to make sure I was following the instructions correctly.
Thanks for your help,