Hahahaha, I don't think making it harder to reverse would be any better, it would probably motivate people even more (deobfuscation is too much fun and fairly easy!).

They should really just focus on improving what they have and pushing clients towards a safer protocol slowly.

Snaps being stolen will always happen, but I do like the approach Instagram took to preventing spammers (getInstagramString(), it stopped everyone until they adapted!).