Seeing the long-rumored 3.0HF DI V6 finally seeing use in near-future production GM vehicles is very good news because it will finally round off GM's V6 lineup, but I also think that since the High Feature V6 block is expandable up to 4.0L of displacement they should come out with a new 3.8L or 4.0L version of the HF V6 with Direct Injection to power GM's heavier full-size vehicles such as the G8, Lucerne, next gen Impala, next gen DTS/STS, and of course the next gen Lambda-based Escalade.
Not only would it help to better distinguish any vehicle that used a 3.8L/4.0L DI HF V6 from the other GM vehicles that use the 3.6HF, but it would also reduce product overlap and reduce the appearance of badge-engineering. A 3.8L/4.0L DI version of the HF V6 would be ideal for any full-size GM model as a base model V6 powertrain option. Nissan, Toyota, Chrysler, and Ford have 3.7L-4.0L V6s powering their SUVs and crossovers for extra torque output so why shouldn't GM do the same with theirs and also spread a 3.8L/4.0L DI HF V6 into their full-size sedans as well?