You picked these, and I gave you interpretations:
Kudos for moving away from the simpleminded insults. Although you still seem very defensive and your timelines begin at funky intervals that make comparison difficult except to confirm bias. You compare the beginning of production of one model to the next one (25 years for the NSX) but then compare the end production date with the beginning of another (280, MR2, etc). I'll get to the weird timeline comparison in a later post b/c that is actually what the point of contention was anyway.
Now to your thoughts:
1. Irrespective of fiscal concerns (I guess it's convenient to forget that Honda had it's share of financial troubles in 2008-11), the 3000GT and Espirit have had no successor. Curious you make no mention of the Evo or Exige/Elise though.
2. The 300ZX includes the Z31 and Z32. So there's a history there that isn't shared with the 350Z. If you want to call the 350z a successor that's fine. I was specifically discussing models with the same name and/or nomenclature as you've noticed.
3. The RX-7 was produced from '78 to '02. Does Mazda make another version of the RX-7 today? I get it. You're calling a 4 door car a successor b/c it follows an FX internal code. I wonder why they didn't call it an "RX-7?"
4. The Toyota Supra was produced from '78 to '02. Does Toyota make another version of the Supra today? I get it. You're calling a $400,000 dollar car a Supra successor. See above.
5. The Toyota MR2 was followed by the MR2 Spyder in the US so it actually did have a successor with the same name (mostly) but it isn't around today. Production was from '84 to '07. I guess Toyota has two more years before the disenfranchised start mumbling about taking as long as the NSX.
Because the frame of references are too far apart, a car is produced following another does not make it a "successor" particularly when there are such obvious physical, mechanical, intent, and price differences including the actual
names and particularly when the manufacturer teases about bringing back a car with the previously discussed names.
But even if we did use your method of succession including the funky timeline calculation, there's the S800 and the S2000: 33 years. So either way, "out of every sports car out there," there is "another that took so long for the introduction of it's successor." But at least you get to keep your pent up disgust focused on the same manufacturer.