Yeah I'd love to see the Inferno return but it's not likely. At one point the team in Florence was going to relocate to Myrtle Beach, a new building was going to be placed near Broadway at the Beach shopping plaza but then it got changed to Conway, where Coastal Carolina University is, but nothing ever came about. Greensboro is another market I'd like to see get another shot, and speaking of which...
The Greensboro Coliseum is technically NHL-ready, and has hosted the NHL before on a temporary basis. For those that don't know, when the Hurricanes relocated to NC in 1997 they had a bit of a dilemma, the arena in Raleigh wouldn't be ready for 2 years so the franchise had two options. Those two options were the somewhat recently renovated Greensboro Coliseum as shown above, and having to work around the ACC and NCAA first and second round tournaments (which Greensboro hosted in 1998) plus whatever concerts the building was scheduled to host, or Fayetteville at the newly renovated but very small Crown Coliseum. For anyone that is familiar with NC, you probably are aware of Fayettevilles reputation as not being a great city to put it nicely. So the Hurricanes opted for the bigger market, in the bigger building with college hoops already set for 2 weeks in March. It didn't go well but it was the best option of a no-win situation.
As for the Greensboro Coliseum itself, it has by far the seating capacity nailed down as it seats about 20k, the luxury suites and club/restaurant levels (or lack of) and whatever else new buildings come with however is a different story.