Dive into your creative stream
might be one of the stranger takes i've had but part of me really wishes that tigerclaw was more of a watership down bigwig type character where he's hotheaded, kinda mean, loves a good fight and has very little faith in fireheart to begin with but eventually grows to deeply trust and respect him as firestar learns and grows into a leader he's proud to fight beside - becoming one of firestar's most trusted allies - while brokenstar remains the main villain of the arc.
fireheart could have his serious suspicions of tigerclaw but he moreso serves as a red herring while brokenstar (and perhaps darkstripe, secretly working with him from within thunderclan) are the real threat