Warden is the least ran character. The reason being is his kit is clearly lacking. As it is, his use is EXTREMELY situational. So, my suggestion is that he gets a smoke grenade in his kit. That way you can still use his ability solo. I just think its just sad how much everyone is getting buffs or nerfs, and poor Warden is forgotten.
Also, I think it would be cool to see Smoke wear an old plague mask for a new helmet skin.