As I started following the tour in 1988, I think there were 2 events famous for carpet: Tokyo in spring and Zurich in the fall.
Ironically, those 2 events were also attracted by mostly the same players. Especially Graf and Navratilova loved these 2, same as Manuela Maleeva. Apart from the Grand Slams, both Graf and Navratilova only met a number of times in tier I-II events and it happened mostly there.
In the old stadium, with the old surface, in Zurich Graf won numerous times.
I think it was Leipzig-Moscow-Filderstadt-Zurich-Linz-(Brighton)- Oakland-Philadelphia for a number of years, wasn´t it?
I think the fall was famous at that time. It´s fun that in the US it´s a fact that some people think the season ends after the Open whereas a number of players make most of their points indoors. It´s sad to see this part having gone to promote tennis elsewhere, especially Asia, with a number of European top stars rising again, such as the Serbian f.e.. It would be fun to reprise the typical indoor season again as it was a nice atmosphere.
It will be interesting to watch wether or not Stuttgart will be a success before the French Open as it is the first indoor clay event of that calibre.