Agreed. A great running game alone doesn't win like it used to. It's a passing league, the pats' regular season stats in everything but their passing offense wouldn't indicate a SB finalist worthy team, but they were. Teams generally prefer to have multiple backs together in packages nowadays. Most of them above have at some point been in a 2/3 back system - MJD with Fred Taylor, CJ2K with Lendale White, Lynch with Fred Jackson in Buffalo, and Seattle tried it with Leon Washington, McFadden and Michael Bush, Charles and Thomas Jones etc etc
St Louis probably should've just traded Jackson ages ago to any team wanting him for picks. They wouldn't likely find a guy as good, but they could probably get 1/2 decent backs, which is all you need if you focus on the pass. At least they could've improved their D if they didn't find a good QB in the draft with those picks. Herschel Walker was the best RB Trade ever though in the late 80s kickstarted Dallas' success and the Ricky Williams trade, though he was one of my favourite players, set the Phins back a few years when he went all out for him. Maybe in a passing league, if you draft well, more teams should try trading them away. There are still those out there who value running backs disproportionately highly. Thankfully with Sparano's exit and Philbin coming in, the Dolphins are no longer one of them.