There are just too many plots to take on, so I'll focus on these things:
* I'd love Paulsen be brought in for S6 (when Esther originally asked him, instead of his going to KNOTS where he wasn't too happy) but I'd hate to miss his work in DALLAS' S10 (per DVD count) so he'd have to miss DYNASTY's S7, but he could return to DYNASTY for S8 thru S10 because DALLAS' S11 ('87-'88) wasn't that great.
Bring in FC's skilled-but-fired show-runner, Bob McCullough, to work on DYNASTY after Spelling hired him to develop other projects.
* No S.A.D., and tell Linda to relax as the series progresses and not squeal it up (the latter of which she was probably told to do).
*Keep the Pollocks as consultants but not show-runners.
*Use more classical, or quasi-classical, music in the scores --- more grand and rarefied compositions (a hella lot o' oboe, dammit) and less of the rambling stuff (
a la Ben Lanzarone's meandering score used to good effect in late-S2 but still used in S5 when it no longer worked and hadn't in three years).
*Annual location shooting (even if it's only for a week!) at Filoli, the main thoroughfares of Denver, and Glacier National Park (which is actually in Montana, near the Canadian border) doubling as the estate. Starting with, say, Season 4.
So many other details, of course, like characters issues and story details and production design.... But there was just a certain level of majesty implied by the pilot and the series' casting and concept largely not realized.
^^ Can you find the mansion?