To each their own but I think there will be few general things we can get a consensus on as pretty bad, the constantly delayed books and disorderly releases (and re-releases) of grade collections that collected multiple arcs or series together.
As for a bottom five, I won’t go into too much detail as I have already done that numerous times over the years.
5:The Don Figueroa / Transformers soft reboot era. Art was a shambles, too many names being dropped because no one looked right in robot mode, too many characters acting out of character and a very hard read most times. It wasn’t till Nick roche have a hand that we started to get back on track.
4: AHM: As Sharks alluded to, as a stand alone this would have been a fun little mini series like Hearts of Steel. As a pseudo retcon reboot (sensing a theme?) after all the ground work had been set by the Furman “-ations” and Spotlights this was just a massive backwards step that the Coda and numerous other titles kept trying to fix with very little success. Plus Drift... who may have ended up half way tolerable by the end but again needed a lot of work and that terrible Stone miniseries that was so boring I can’t even remember the tile to get him to a point where he became more than a joke...
3: Unicron or dead zombie planetformer... meh what a massive boring letdown that really told a mediocre small story that did nothing but allow them to wipe the slate more or less clean. Sadly another theme coming...
2: Events: Bar “Death of Optimus Prime” IDW failed every event they tried. Either they were bloated and silly like Dark Cybertron, were used to tie into the hasbroverse like Zombies/dvoid, were just plain useless like Megatron Origins or were a massive disappointment like Inicron and all the other Hasbroverse stories.
1: Hasbroverse: when it started by killing Kup in the zombies “combined universe” then they tried it again in Action Man... every new series that was part of the forced Hasbroverse needed a transformer in it that they then wasted or made useless. Then they ruined the main stories incorporating all the other mini series events (visionaries anyone???). All ending in the death of the entire universe and series. It was a slow sinful death Brough about by a boring event that also made the last year of the Prime book full and difficult to read (to the point where I no longer bought the issues) killed off the decent Windblade series and just generally left a bad taste in the mouth.
Sadly it is good bye to the IDW verse, Furman had an intriguing and different story to tell that Jame Roberts and Nick roche lovingly continued with Barber doing a most commendable job trying to tie it all Back together after McCarthy and Costa had done their best to kill it off.
I won’t be buying the new series but I’ll give it a read, it will have to be more Wreckers or Lost Light in style and not have any “big hasbro events” in the near distance.
Looking For: Wreckers Saga TPB Collection (with Requiem)