Hepcat wrote:

In retrospect, I think Schwartz's original intention to dispense of all the costumed crooks. After all, they were only reintroduced into the comic mag after they made their TV appearances, and then only those that had appeared on the TV show. The ones who never appeared on the TV show such as Cat-Man, Clayface, Firefly, Sea-Fox, the Fox, Shark and the Vulture, etc. never reappeared at all.

  
Schwartz dispensed with the crappy low-rent Schiff era villains, like the Terrible Trio.  Joker, Penguin and Riddler came back under the New Look.  

I think the New Look experiment was, unfortunately, derailed by the TV show.  We got about 18 months of Schwartz-inspired Batman, and then "camp" took over.