Savage world Rifts. The setting is fantastic, the 1st party rules are a mess as the best of times. Savage worlds rules set enrich the rifts world by making it a playable.
In the same vein, I was in a Shadowrun campaign that switched over to the Sprawlrunners rules for Savage Worlds (which can be used for either Shadowrun or Cyberpunk). Savage Worlds brought out the dynamic action and calculated hacking scenes that define good cyberpunk fiction without being dragged down by clunky rules.
I love Shadowrun as a setting and a game aesthetic; but fuck do I hate the sheer bookkeeping of just standing a character up, never mind the density of the actual play.
Oh nah when I say "online" in this case, I'm talking "getting out of character creation and into gameplay". Only found one good program that made Shadowrun chums, but it was a for-cost program that locked the purchase code to one machine. And I lost that code; so I'm just... Never making a sheet again, 'cause I'm not going back to the days of meticulously tabbing out how much nuyen I spent on what during character creation in a notepad file again.
(And honestly, roll20 play as far as Shadowrun goes is just as dense from what I remember.)