I've got no experience with an intervalometer. What is it exactly?
Go, Magic Lantern, Go :-) ... you don't need a 7d2 for that, a Rebel 550d+ will do just fine.
I see the 7D II getting the 70D's APS-C sensor as a sign that Canon hasn't changed their M.O.
Like "don't rock the boat and make as much profit with as little investments as possible"? True.
If they didn't already use a new fab and new technology for the 7D II (which was significantly delayed and gave then plenty of time to do such a thing), then there is no reason to believe they have done anything with their sensor design or fabrication at all.
I admit you've lost me there - the 7d2 specs are no indication for anything concerning the 5d4 and no reason against
believing they have a real sensor upgrade in the pipeline.
However 7d2 is
proof that Canon stays Canon and they don't cave in (as they'd probably see it) building/using new fabs even under pressure from Nikon/Sony. They are doing just fine with good dslrs featuring mediocre sensors and good phase af systems, at least atm. If they add a stellar live view af and good usability, what amount of people outside geek forums really care about dr (dr. what)?.