Not to beat a dead horse, but NEW TEEN TITANS, LEGION OF SUPER-HEROES, and INFINITY INC. were DC's best books at the time (as evidenced by, among other things, them being the flagship titles printed on better paper).  If nothing else, you'd think there would have been a plan not to sabotage these books by eliminating foundational elements from each (Wonder Girl's very existence was a big mess with the elimination of Wonder Woman's history, LEGION went off the rails without Superboy's existence, and the elimination of Earth 2 not only exploded INFINITY INC. and ALL-STAR SQUADRON but ruined the raison d'etre for the Huntress and Power Girl, two potential super-stars).

So, yeah, what if there WAS a post-Crisis plan?

As for the idea of Alfred molesting Bruce, if nothing else, it makes me glad that Uncle Phillip is no longer a part of the history. Once they got past the idea of Alfred, they'd have landed squarely on Bruce's Uncle. 

According to Mark Evanier, it's a myth that Kirby asked to take over DC's lowest-selling title. Kirby actually was not interested in doing someone else's characters, but for budgetary reasons DC insisted he do at least one established title, rather than only starting all new books.  The reasons Jimmy Olsen was chosen were that Infantino wanted Kirby to revamp Superman, and Kirby said he didn't want to take an assignment away from someone else.  Jimmy Olsen had no regular artist because Pete Costanza had just retired, so it fit the bill.