I think they should bundle the Dozer Blade with the E8. That opens up the route of a possible re-work of the E8 and in general it not being tied to Rifle Company anymore exclusively altho it might be a problem of having both Rangers and the Calliope in the same commander as well so they'll need to figure out how to balance it properly.
Alternatively the commander doesn't give much good offensive abilities such as strafes, loiters or arty barrages so it could work with the E8 also being added in and not cause a major balance void.
How does E8 need to be reworked? This unit feels exactly like the OKW p4 and it is on the same price level. And both units are amazing imho.
Btw I was thinking about adding E8 to a commander with such a theme as well when I did the commander proposal but this is risky cuz it may cause way too much overlap with the rifle company. Dont forget that the RE rifle nade package will most likely be copied over to rifle doc to replace the flamer