OT Palpatine Vs DE Palpatine
I actually considered this a few years back, but never wanted to get flamed for it.
Spoiler:
Now I'm in more of a position to be flamed but **** it:
While Krayt states that death and rebirth makes a Sith considerably stronger, and Tyranus demonstrates on Vjun that being on a dark side nexus makes a dark sider stronger; Plagueis stated something along the line to Force alignment (to either the dark or light side) literally provides a Force user with a larger power level...and the Sorcerers of Rhand (read wookieepedia) confirmed that the dark has a will of its own and makes its practitioners more powerful for succeeding in increasing its presence throughout the galaxy; than no single Sith corrupted the galaxy as much as Sidious, the guy literally plunged the galaxy into the Dark Times after the PT. Sidious' death literally reset the balance of dark and light throughout the galaxy.
Is it possible that Emperor Palpatine lost his influence over the dark when he died? Of course it's suggested that his Force storms were granted him by the dark, he also said that he'd discovered the ability long before his death in Book of Sith, this indicates that it was in fact a result of his Force corruption, as was his scarring. In RoTS he claims he wishes for his empire to stand 10,000 years, but even body hopping between clones would not give him total immortality because each new clone is less Force sensitive than the original (DE handbook) - so is it possible the dark was also increasing his longevity before his death, and that it betrayed him because he was trying to create rather than destroy, as the Sorcerors of Rhand claimed?
Could OT Palpatine really have been more powerful than DE Palpatine? He could have already been feeding off of the collective life essences of his subjects on Coruscant along with its inhabitants, he had 24 years to do so...