Don't get it mixed, what you are saying is different to the OP.Not everyone that believes this is a SK fan. I don't ship SK and I think it would be a way better plot. Also, wouldn't this please all fans (if she is an experiment) and keep Kishi from losing the readers again. Cuz wouldn't the moment she is revealed to be Sakura's be the last time the SK fans read it. The SS fans, on the other hand KNOW they will be end game. So if he wanted to keep both, he should go this way. And I still think it would be ignorant for him to spoil the manga in a databook. But that is just me.
The OP is saying Sasuke impregnated Karin and is traveling with her (so basically he is saying they were romantically involved and are still together) and Sasuke just dropped Sarada on Sakura to be safe. We both know that scenario is impossible and only an SK delusion. Lol
You are saying Sarada is an experiment by Orochimaru, this implies that Sasuke is really just traveling by himself and is not involved with anyone. Much more plausible.
Although I still think the most probable case is that Sasuke hit it and quit it with Sakura and this is just bait. With a shitty explanation on why Sasuke left coming soon.