Hahaha, oh lord, I grew up with the PSX game. For it being some of the first 3D fighting games, Toshinden 1 was a promising balance of incorporating both 2D gameplay into the 3D realm. It's not perfect, but it's still playable than most of the later fighting games that came out after.
As for those voice actors, oh yeah, hahaha, I also believe the localization team got some of their relatives and friends to come in to voice act. I died hearing the ethnic attempts on the Saturn on Youtube. So that's where they got the voice tracks.....
There were four main games, and there was even a Pocket Fighter styled cute parody fighting game, a puzzle fighter game, and even a card game (yeah I'm kind of a fan for this series lol). Oh yeah, there was a reboot in 2009 with one for the Wii, but that game flopped. Too simple gameplay and despite having the artist from Death Note on it, the story was the most bare basic of anime.
You kidding me? There were fansites for even Toshinden 3 and even 4/Subaru. It was pretty cult, but the series had its fans. You're not wrong in the series by that time being outshadowed by Tekken and Soul Edge in the day though. The story turned pretty damn Mortal Kombat though by 3, the story comes to revolve around a cult that worships an old Greek god of conflict and oversaw all slavery and savage activity of the world until the Secret Society, and they send out assassins to sacrifice the cast of the past games to their god. Fun shit.
Toshinden 4 though, you'd be more hardpressed to find fans for that installment. That was the game that killed the entire series. They tried to sweep the whole story and cast clean for a reboot, but you know what happens when you remove everything people liked about the series in the beginning....