In contrast to all of the heal skills, Soothing Stone is pretty much Mending on a longer cooldown that doesn't really take away as many conditions as it should. 6 would have been more in line IMO, however with all the new things we've been getting. It really doesn't hold up that much, Jalis overall has been in a dire need rework which it's been slowly getting. However, there's still a few things go through.
There has been this suggestion of barrier per condition removed going around which honestly it's surprising we don't have it yet given that Jalis "can" get barrier but only via SotM which is.. Mediocre at best even with healing power so I would agree to have it and encourage proper plays with the skill, kind of like Empowering Misery but gain more barrier for every conditions removed, because I do definitely think Soothing Stone deserves to remove "all" conditions for barrier with how weak the heal and large the CD is.
Honestly, next to RotGD that needs to be speed up to the level of ½ PA (Energy is fine due to how the principle of the Legend is to always have stability and not be stunned, 40 is reasonable). This would actually make dwarf more attractive to a lot of players and try, but also viable to the point where the skill ceiling isn't impossibly high to work with.