I just watched game 6 of the 1978 world series. 9 runs, 18 hits, 9 full innings, and the game time was 2:34. The pitchers were taking 6-7 seconds from the time they got the ball on the mound to the time of the pitch (no runners). Today, a 7-inning high school game often takes longer than that (although my HS plate games averaged 1:44 last year).
Keep them in the box. Don't call time unless there is a good reason for it. Disallow warm-up pitches when they take more than a minute between innings. Keep the game moving. All that BS adds up.
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