I honestly think this is opening the doors to Anna's inclusion in a future smash game. Lets pretend that next time during smash speculation FE14 is the hot game atm, and Priam is the main lord in that game. Well, it's too early to really say but right now what more could he be than an Ike clone?
Now, we've seen a main lord get skipped for a unique character. And is anybody really going to doubt that Anna will be in the next Fire Emblem game? Yea, didn't think so.
Anna was the 4th most requested of the FE characters for this game. Chrom, the frontrunner, got shot down and was reduced to a final smash. And is anybody really going to care about him after we get new lords just like him? Doubt it. Even if many are hoping for Priam in ssb6, there's no longer some sort of "pattern" as idiots like to call it, where the old lord that's not Marth gets swapped out for the "new" one. Well after Chrom the 2 obvious next-in-line characters were Lucina and Robin. In and in. She may be done for now. But if we're to create a smash 6 roster with only what information I have right now, I'd definitely include Anna. If they include her as an assist now that will only spread awareness of her and make things possibly better for us in the future. The only other fe character with a good shot at becoming an assist is Tharja, and Anna should take priority over her. Micaiah is also possible, but less likely than those 2.