The Fiero of course was quite a bit different from the Firenza. The first Fieros were badly hampered by their "Iron Duke" 4 cylinder engine. The guts of a pretty good car were there, but GM didn't stay with it, which often is the case. I thought the Pontiac Solstice and the Saturn clone were nice looking and decent performers.
GM often would scattershot models all over looking for a hit, and nearly always missing, but if one was a near miss, they'd drop it instead of fixing it.