As I've noted, I can only use Wiki and whatever other sources I can find (including here, thankfully), but I notice in their history of Hungary it says there were numerous rebellions at various times while under Hapsburg rule, well before 1848.
So, my thought is this. I've read in a few threads how teh Prussian king might have had a shot at the throne of Hungary during OTL's War of Spanish Succession. My question is, what about a War of Hapsburg Succession in 1670? If the Hugnarians rebelled, who would get the throne? What if the Royal Knockouts were wars of French and Spanish Succession in the 1590s instead? If I do one it won't be for a while, but it would be interesting to see Hapsburgs partly or totally go poof at the same time Bourbons do. (And, even the 1590s one, there are ways to extend it long enough to the Hapsburgs go out inA ustria, too; though I think a mega-crazy 1670 is the best way to go.)
On a related note to Leopold I nearly dying in 1670, I was looking for when and found this stating he may have been being poisoned.
http://www.archive.org/stream/poisonmysteriesi00thomuoft/poisonmysteriesi00thomuoft_djvu.txt
Any ideas about its accuracy? If true, wat was the motive? Any reader or watcher of mysteries knows there has to be means, motive, and opportunity, and while I've no doubt the parties involved would have the first and third, what would be the second? It doesn't make sense in a way. Then gain, we are talking convoluted 17th century politics.