"Face."

We're extrapolating a bit, from something I remember from the Earth X/Universe X/Paradise X books: despite there being an infinity of alternate universes, there was maybe only one Hell, and Mephisto was maybe behind the proliferation of alternate universes, in the hopes of finding one where he escaped judgement. The idea of Rom's Limbo being the same across the multiverse was horrifying: imagine every Dire Wraith across the multiverse, dumped into the same hole. Is that a little much; do even the Wraiths deserve that? Forever, with no chance of escape or release? Having spent hundreds of years fighting them, Rom might say they have it coming. (I need to do that re-read, since Rom does make an appearance in those books; Cap gets the neutralizer from him!) 

 We've also hopefully established, Magneto does not seem to care for Rom; and we'll see why later: it's an in-continuity answer, or at least related to continuity?