SQ was not Roberta Williams, and I enjoyed them quite a bit. LSL was fun, too, and I believe she wrote one of the later ones.

As for other games during that same time period that were fun, I'll just point out that there were still Infocom games being produced during that period. The KQ-style graphics were pretty good at the time, but I always saw them as being distracting more than anything else. You gotta wait for your guy to cross the screen, etc, without having any game element that was really part of the graphics. Heck. even the often lambasted Z6 Infocom games that had graphics (like Zork Zero and Shogun and Arthur) did a better job incorporating the graphics than RW did.

As for actual other games, The Hobbit was pretty well done. Some of the early LucasArts games were during that time, I think. Like the first Indiana Jones adventure game. It's so hard to remember the relative times of things that far back....