It would be another bad move to do this. Of course it is a bit of irony that they will all be one company again. Originally Sprint Spectrum - GSM. Sold off the network, it became something (i forget) very briefly. Then it changed the name to Voicestream. Then with the purchase by Tmo Germany, it became Tmo USA. Now Tmo Germany might purchase Sprint meaning its back to the same company again
But i do believe this is just another rumor. Sprint only lost what it did last year because it wrote off Nextel. And pushing THREE completely different wireless networks would be suicide.