How many first-class seats is too many? Delta is willing to find out

How many first-class seats is too many?Delta Air Lines is willing to find out.Earlier this year, the carrier debuted one of its wildest planes yet: an Airbus A321neo sporting a whopping 44 domestic first-class recliners. The cabin, which spans 11 rows, takes up almost half the aircraft.For comparison, most of Delta's single-aisle planes top out at just 20 seats up front.Hear us out: It might be time to book holiday flights alreadySEAN CUDAHY/THE POINTS GUYGoing with such a massive front cabin was certainly an ambitious bet for the airline.But months in, Delta said it's had little trouble filling those first-class seats, selling about 80% of them, on average. And the oversized first-class is serving as a trial balloon, of sorts, as the airline ponders how large to size its first-class cabins, long-term."It's a great experiment to see how big should our first-class cabin be for the future," chief commercial officer Joe Esposito said in an interview this past week. "It's not a mystery, we have high demand in those cabins. And we want to see how we can supply it."A wild first-class cabin created (almost) by accidentIronically, this one-of-a-kind first-class cabin wasn't supposed to exi...