[Trexmaster]

I have made 3 amalgama one salamandra and one chimera that I never actually finished.

You suffer way too much for what little you get from the majority of Chimera evolutions. All these niche counters get to apply to you if you decided you wanted +5 ELE ATK for a very minor bonus. As mentioned the only heavily impactful evolution is grudge claws and it gives you the greatest weakness of all: holy. It's brutal. The only W Chimera has gotten is Insect Whistle letting them potentially benefit from the +3 all stats, otherwise the vast majority of effects that interact with races tend to be punishing rather than rewarding having a certain race.

Oh yeah, and have fun getting Fated Enemy to apply to you for almost every single one that you can currently obtain. (5/7 Fated Enemy's available can apply to Chimera.)

It's definitely something to keep in mind for the future if having a certain race offers a tangible benefit, and I believe that if we placed limits but increased the impact of evolutions it'd also help curb any potential future balance issues with Chimera having access to so many different races at once.