This year the downstream impacts of a forecast El Niño, if verified, may compete with a tendency for otherwise neutral to possibly very favorable conditions in the Atlantic and make a much larger than normal range of uncertainty in seasonal forecasts. In fact, a strong El Niño could easily bust all forecasts that are presently average to above average, while ENSO nuetral conditions (neither El Niño or La Niña present), could allow for a banger of a season.
There's even a real possibility of an El Niño that does not result in the usual downstream windshear, and the UKMET office, which uses a robust "ensemble prediction system based on a fully coupled ocean-atmosphere general circulation model (GCM)" is calling for just that, with 14-26 Storms, of which 8-14 become Hurricanes, of which 3-7 become Major Hurricanes, with an ACE of 222 despite El Niño! (LINK)
My once again slightly updated method I've toyed with over the years comes in at TC/STCs: 15 (Likely range of 10-20) Storms (AKA Names): 13 (Likely range of 8-18) Hurricanes: 6 (Likely range of 4-8) Majors: 3 (Likely range of 2-4)
Despite my best guess of an "about average" number of of total storms, hurricanes and majors, I see an average to above-average risk of US landfalls. And as always, "it only takes one."