I must admit, this is a intereting moment for me because I had mostly given up on the idea a long time ago. When the game was announced Lucina was on the top of my list of list for respected newcomers. However after Marth was announced and time went along pointing further and further towards Chrom and the constant bickering within the Fire Emblem discussions led me to go into a netural corner between the three awakening character but still remained doubtful which caused today's trailer to be a much bigger shock where even my normal neutral and calm handling of those situations nearly went out of control while I was at work, hah.
It's a weird feeling.
I understand. I wanted Lucina more than Chrom as well, but I had just come to accept that Chrom was the one that was happening, and I even accepted it as I like Chrom as well.
This trailer took me by complete and total surprise. I was going in fully expecting Shulk, only to further confirm the underwheling Gematsu leak (more that I just was feeling really down about having all of the characters leaked to us so early, the element of surprise was completely gone). When it was Fire Emblem I was a bit surprised, but I still 'knew' it was going to be Chrom.
Then when it showed Lucina in the light and a pose where it might say she is going to join the battle started and then the text showed up I flipped out. However, the "?" threw me for a loop, alongside the fact that I just couldn't throw the leak away like that, especially when Chrom was present in the scene.
And then Robin appears, and is cemented as a newcomer, and I think by this point I had lost all sense in my mind and, when Chrom appeared I thought he was playable too. xD
Seriously, if there's one thing I have to give the team here, it's that the character trailers they created have always been incredibly suspenseful. From the "Is that Kirby in Mario Kart?" Rosalina trailer (when both MK8 and SSB4 had been confirmed to be shown in that direct, but Iwata said they only had one title left to show and neither had been shown. o.O), to Greninja's trailer (where I really thought we were to going to see Mewtwo) to this... They really know how to play with the mind. I am impressed. xD