I really like the idea of a trident that becomes progressively more powerful the more matches you win. Or, perhaps more generally, equipment that becomes more powerful the more XP you have?
I have good experiences with fighting for the trident in mp. The best outcome was probably in the Rand game, where I sent my earth 9 cyclops into the arena. The quickness from the trident almost doubled his efficiency.
It was a game with very hard research so forging quickness boots or a jade armor would have taken a lot of time.
Even in Single player it´s usually worth it. The AI builds his pretenders in a pretty stupid fashion, so a decent thug/SC should win and get free quickness.