So far, there's no way to change the report suite id for a given report suite.
This would be a nice feature, expecially when you find out that a just-fully-configured report suite has a typo in its id.
(Yes, the advice here would be "always double check" but errare humanum est)
I totally agree with rjack.
It's the same issue for virtual report suites.
It's really annoying and customercare can't do anything about it.