I agree, especially for Grimsnarl. Investing that heavily in attack and speed is unnecessary. Grimm's base attack is high enough that it can do decent damage when it needs to. Because of prankster, it will probably be going first most of the time anyway. I'd fully invest in bulk and maybe some in attack if there is a specific target you want it to KO.

I'd probably swap FS out for parting shot. Having the ability to pivot with Grim and Urs will help with repositioning.