The need to add Kris was for the supports. Being the second part of the game, it would be unnatural for a previous character to just take an interest in meeting others in this part of game.
Regarding his/her personality, I love to Kris. Female is cute and Male Kris is so clumsy with the girls.
I will never forget his/her support with Samuel, Phina or Tomas, are very funny!
I know that Kris takes lines from others, but is few compared to the number of lines he/she owns.
Personally more than a new game, I would have preferred to see him/her in an alternate game like Leif did, joining Seliph.
If I had been the writer, Kris would be Anri's secret descendant.
This is how some threads come together:
- It would explain why Maclir, Altea warrior decides to train Kris instead of joining Marth.
- The resemblance between Marth and Kris. (Remember that Marth is not a direct descendant of Anri, but of Anri's brother line)
- The curse of the emblem, if it were false, argues why Marth was willing to use the emblem even knowing that the curse would take away a loved one despite loving Shiida above all.
- It gives an interesting moral conflict between following and leading