1) How the heck could Dr. Gero & Dr. Myuu created Hell Fighter 17 in the afterlife? there are no cybernetics shop in hell, it should have been covered up or explained (also to explain how could he matched a much more powerful Vegeta who at this point should be able to crush the likes of original 17 to dust without breaking a sweat). Even a creation via "the super-secret 'root of evil' quarry/lake in hell that get stronger whenever a bad spirit arrives to the otherworld, hence got so much stronger since the Z-Fighters defeated Baby & other past villains before" Gero found out of would be better than what we've got now. 2) Give Super 17 a PURPOSE, it can't be just a bad guy without a target in life, it was stupid with Cell, but still people roll on with that cuz it was DBZ and we wanted to see action & blood over sophisticated stories back in the 1990s. If Myuu is a Machine Mutant who wants to replace all life forms with his kind, just like Dr. Gero wanted with Androids, maybe Super 17 should be sharing this view thus wanting to destroy all ningens, not just cuz he's "evil & powerful hurr durr kill everyone, but let's start with the Dragon Team". 3) The pacing was horribly rushed, and could have been felt through the product. Try to spread a story like that (with a villain who has a purpose) at least over 8-10 episodes, that's how a saga/arc should work. 4) The villains escaping from hell could have been an issue for two episodes (always felt it was a good idea that was over-rushed), as they did with the last 2 episodes in DBS (75&76). They could have used them as an excuse to bring back old characters who were long forgotten (Yamcha, Tien, Chiaotzu, Yajirobe) to shine once more for the very first time in this show. Since Krillin ain't around from the beginning of the "Another 17 chaos", it could have been great to show them kill some hell escapees who this time spreaded all over the Earth and were not just centred in the same city the Z-Fighters were at (maximum damage to the world=more options for near-by heroes to show up) and to show others who were forgotten to be taken out by our "turned-to-weak-again Gohan", Pan & Co. : Chiaotzu can take out Appule, Cui, & Yamu; Tien could get Spopovitch & The Spice Boys/Cooler's Armored Squadron; Yamcha could get a herd of Saibamen for old times' justice, Dodoria & Zarbon; Yajirobe against the "Demon Clan" & some RR soldiers, Gohan vs. Raditz, Garlic Jr.'s DBZ movie 1 minions, King Cold & Cooler; Pan against King Piccolo, other Red Ribbon chiefs [keep her existing scenes as well], Babidi Henchmen & Doll Taki, Majuub taking out Captain Ginyu, Sigma Force Canon & Cell Jrs., Trunks takes on the Ginyu Force, Leon & Mutchy, Goten vs. King Cold's soldiers or some evil Saiyans/other Frieza minions. The absence of Goku in this part was well needed, after Goku Time went on there since the beginning of the series. Also, Baby & Luud should have been there too unless they had an excuse for them being purely mechanic (to be written out as Android 16) or reincarnated as new beings to avoid using them.