I'm a "huge" advocate for emote animations; they really bring extra life to virtual space. As for special running animations it could be interesting but there are only so many ways a humanoid can run before it becomes outlandish comedy territory.
I am always uncertain how I feel about putting emotes behind paywalls. I understand the sale of emotes pays for the cost of production but emotes bring so much added humanity to the robotics of virtual space. I perceive emotes as an essential quality of life (QOL) necessity for multiplayer games. In my experience games become more engaging and immersive when people are using emotes.
Lord of the Rings Online (LotRO) has a mind boggling list of emotes; it's absolutely fantastic for their Role-playing environment and it benefits all spectators. They have a paywall for their more elaborate and uncommon emotes but even their free emotes list is quite large.
I am unsure how extensive Em8er plans to generate emotes but I hope they have more than /dance,salute,tikidance,sit,wave and I further hope common emotions are freely available but I understand if fancy emotes are locked such as /backflip,roar,snowball,chickendance,wall-lean
All in all the more emotes the better; they give players more opportunities to play their character's persona.
/Cough, sneeze, joke, taunt, fist bump, brandish-weapon, rude, laugh, flinch, swoon, wave, excited-wave, depressed, sigh, cry, dust-shoulders, golf, pitcher, fidget, raise hand, disagree, agree, sinister, threaten, cheer, clap.
Imo, the more animated the animation the better. Waving down friends with enthusiastic wave emotes just brings energy to the group right at the start