I wonder if this wheeled SP twin 120mm AMOS wouldn't do more for a Stryker Brigade than an M198. 3/2 has 1-37 FA with M198's. Every once in a while they get to fire some counter-battery missions.
Mobility is pretty important. Being able to sling load and air drop howitzers is nice, but being able to move once you get them to the battlefield is critical.