I don't really think Nintendo has to have "big hitters" in order for the pass to sell well. Nintendo has gone and said that the first pass already sold like hotcakes, and was a point of significant $$$; its likely that it did well above their expectations, and was a pretty good investment.
The second fighters pass was likely not going to earn as much as the first, due to natural decline in the playerbase. However, it's still Smash it's still going to sell like hotcakes in the end, and still be extremely profitable even if all 6 characters aren't particularly groundbreaking. Heck, even if all 6 are first party, from a "money" perspective that likely means far less fees paid to 3rd party companies.
That said, this is Nintendo; they aren't predictable at all and they definitely do know how to surprise. There are going to be 1st parties, 3rd parties, shill characters, groundbreaking characters, literal who's, and fan-favorites; Nintendo likes being unpredictable and no one out there except for Sakurai, and some top officials at Bamco/Nintendo likely even know who all these 6 DLC characters are yet.
The second fighters pass was likely not going to earn as much as the first, due to natural decline in the playerbase. However, it's still Smash it's still going to sell like hotcakes in the end, and still be extremely profitable even if all 6 characters aren't particularly groundbreaking. Heck, even if all 6 are first party, from a "money" perspective that likely means far less fees paid to 3rd party companies.
That said, this is Nintendo; they aren't predictable at all and they definitely do know how to surprise. There are going to be 1st parties, 3rd parties, shill characters, groundbreaking characters, literal who's, and fan-favorites; Nintendo likes being unpredictable and no one out there except for Sakurai, and some top officials at Bamco/Nintendo likely even know who all these 6 DLC characters are yet.