About the "newish Chargers" thread re: V6 and newer engines

So I see this thread

New(ish) Chargers, are they any good?

And I've been disappointed that not only did "Ma" not continue the Dakota, and did not install a hemi in 'em like she did Durango, but we "are stuck" with the 3.7/ 4.7 thing, which near as I can tell, "I want no part of."

So is the newish 3.6 V6 something that could be swapped into a Dakota? What platform/ electronics/ bell housing etc etc does this use

Second "in general" what "newish" engines ARE OK and have the 3.7/ 4.7 been fixed? What years apply?