Cav Riflemen require not only commander lock but muni, MP, (and Fuel in considerations of your fiery tactics).
They are good sure, but they lack long range damage as all other CQC units, Volks care snares, just snare and then retreat rather than smashing that T like you smash this form
Anyhow OKW has t0 AT and Strums can grab AT if need be but its not as effective of a counter. you get standard mines and can get light armor rather early as well should you opt for t1 build. IMO you'll know he went cav rifle early as you'll see him opt for a wc51 so just have the foresight that he'll get CqC and you just hold back with volks 12 damage.
Lets give it a bit to see how this meta shapes out for now as it already seems to shake things up a fair amount.