I think it's more morbid because she's actually supposed to be dead.
But yep, I'd buy it.
You know how back during the Vintage Line (if you were a kid back then) - you always wondered WHY they didn't put out a slave Leia figure?
Well - I think that dead Padme in casket will be the PT's "Slave Leia" figure - the version of the main female character that will NEVER get made during this run. I think at the time, the idea of a skimpy metal bikini on a female action figure was too much for the early 80s society to handle - flash forward 10 years and it was a-ok.
Now when the line dies in 2008 and then starts up again in 2019 because Jett Lucas is taking the SW mantle from his senile father and making EPs 7, 8 and 9, I could see the new toy company hyping the "Casket" Padme as a NEVER BEEN MADE figure just like they did with Slave Leia and Grand Moff Tarkin when POTF2 came out. Perhaps the society of the future will not mind the idea of their children playing with action figures of dead women!