I read on a Dragonlance FB group that W&H wanted Summer Flame to be an entire trilogy, but TSR were desperate for money and said no, so three books of plot was unsatisfyingly crammed into one novel. Which i've never quite understood, surely TSR could have made more money out of three novels rather than one? Still, i don't think it would have saved Summer Flame for me.
The Lost Chronicles books, from about 2007 I think, were a much better read. Basically filling in the gaps in the original trilogy. Thorbardin and Skullcap, Icewall, Kitiara and Soth, and what Raistlin got up to once he took the black robes.
There's some stuff I didn't really like in there (Flint and Sturm's characterization in the first book, the final battle against Feal-thaas, a few other bits and pieces) but on the whole, a much more satisfying read than any of the later-timeline books where all of a sudden some dragons are aliens and Takhisis steals the world, and the gods go away and come back and go away again, and all that similar silliness.