Beastmaster Rogue

[Snig]

I'm trying to homebrew a rogue with a animal companion similar to a beastmaster. Without giving up my assassin archetype, can any of you think of a trade off that would keep things balanced?

Some ideas I had was

- drop cunning action

- delay sneak attack progression or nerf it in some other way?

Basically I'm looking for a way to balance a rogue taking the beastmaster archetype along with assassin.

[Snig]

If this is just too op giving him something similar to find steed would work. I'll be using it mainly as a mount, I would just like it too be more hardy / useful than a bought mount.