Yup. It does have to be spelled out in my book.
I get Secret Wars and all that inconsistent deus ex machine stuff.
Doesn't explain anything.
We just assume all those Sakaarian never died years before Secret Wars reset everything?
If Sakaar WAS rebooted, why do they remember the Hulk?
Did Hiro-Kala's story - linked to the planet's destruction - not take place?
To me this is a mess that requires more thought than just 'nothing to see here'.
As far as I knew most of what happened was held over and was what it was before. It just gives them an out to change some things with the reboot instead of starting from ground zero.