I'm planning on potentially running this AP in the near future, and one of my players expressed interest in playing a Fire focused Kineticist(he expressed this desire before the AP was even brought up as an option).
For a fair few APs this worries me because the further they get in the more monsters he can't potentially deal with due to their immunity to fire. Having skimmed through the first few books on Reign of Winter on the other hand makes me worry for the opposite, that he'll "overperform" too often and it'll negatively effect both his and the other players enjoyment because the threats quite literally melt away, alongside the greater chance for enemies to single him out because he presents himself as the greater threat throwing fire around.
So I guess my question is this. Does a Fire Kineticist over excel to a negative degree in this AP, or does the prevalence of encounters that he can do well in bring him more up to par with other damage focused characters?
As a note the player wanting to play the Kineticist is the most experienced player at the table and has a desire not to overshadow the party to much after having unintentionally done so in the current campaign. The rest of the players have some experience in playing Pathfinder and tabletop RPGs in general, but are still rather new