It will be nice if all the websites are integrated and we have a single experience with single logon. Currently there are a multitude (community, shop, cloud etc) for some I needed to create a 2nd account and you have to re logon when jumping between them…
The same question was here already. It was not that simple as it seems and they have also higher priorities
I have some experience in SSO (Single Sign-on, what you are talking about) and it is not that easy. It may be trivial for the community portal due to the fact that it can be an “off the shelf” software, but unless Cloud supports it (and I am sure it does not), it’s significant change to implement.
While a great idea, it’s not the easiest task, and there are more important issues.