I see. The lack of unique headers on each page is probably my biggest source of frustration with WP. There is a plugin called "Dynamic Headers" that provides this capability for some themes, but could not get it to work. You may have better luck. (I'm allergic to code, so do things different than the code proficient).
If it were possible for you to use two or more different themes and place unique slide shows in the header of each, you could then use a plugin called Headspace2 to switch themes on a per page basis. HS2 is basically an SEO plugin so I sometimes use it for both purposes.
Don't know how much control you have over the header on you theme but if it could be eliminated, (or maybe just minimized to contain the title), there's a plugin called "Custom Widget Area" which provides a widgetized header area. Then place a text widget (I use Black Studio) into the header area for each slideshow, and use the Display Widgets plugin to tell on what page each will show.
I couldn't find a header-less theme, so I use theme generating software for that part. Not sure the moderator would allow me to mention the vendor.
Hope I didn't waste your time, but I've been in the same position, and it took weeks to figure this out. Good Luck!