Assuming that the info provided by "CB" is that which one sees when one has "Cell Info Display" enabled [Nokia handsets - not sure what it's called on other types of handsets], then I tend to agree that displaying the 2.xG base-station name must stay, it was also useful to get "3G & HSDPA enabled" as an indication that such a base-station exists.
As an alternative, there is also a Topic Index Reception thing on just about all Nokias [no idea about other types of handsets], years ago MTN used to provide weather etc info using that service, the advantage is that one can subscribe to and unsubscribe from multiple topics, i.e. ignore those that you're not interested in, and only explicitly opt-in for those you are interested in, perhaps this is how Vodacom's Y4L CB messages currently work - I suspect that Cell Info Display is a specific CB Topic number, but I could be way off track here.