I feel that another T should be able to easily call upon a body to be revived if they happened to not have any credits left over to do so themselves, in which case I don't see the body being visible like the DNA scanner for example to be a bad idea, rather that would make communication between them a lot easier, especially for those who have limited methods of communication (typing only).
I think its actually a really good idea that would make it easier to play as T's, besides reviving another T is always risky to begin with, as soon as anyone notices they are alive again another KOS could easily be called, in which case adding a buff to it really is not such a bad idea. I like it!