Starmaker: There's only one answer to what to play after Planescape: Torment and that is
Primordia. Srsly.
LynXsh: Примордия в очереди. Как раз через одного после ПСТ. Это без вариантов. Просто душа конкретно кп просит.
..It's even [wrongly] taglined
"A Cyberpunk Adventure"!
(Okay, I'll shut up about it now.)
Out of the two Wadget Eye games on the list,
Technobabylon has a strictly better setting and actually thematically relevant puzzles (and it's more technically accomplished, although Janet may have brushed up Gemini Rue since the last time I played it). The tone, however, is all over the place (reminds me of Beneath a Steel Sky), and the ending is flat.
Gemini Rue on the other hand could be set literally anywhere and has a retrofuturist flavor (as opposed to modern cyberpunk), but has better characters, a coherent tone, and a properly dramatic ending (with a helping of Calvinist morality, ew).