I've been hearing rumors of that as well, though it doesn't make a whole lot of sense to me that they'd bother moving more flat rides to Sesame Place when I'm pretty sure there's nothing in the Bay of Play area that doesn't already exist at the other park.
I'd agree on the dark ride too. I'm also not at all the target demographic lol but from the one time I visited (they do occasionally give SWSD pass holders free tickets there btw), it seemed like the one thing the park was really sorely missing was a solid indoor themed ride. It seems like there's every reason to build one too--the normal ticket prices are comparable to a full-fledged theme park, the company seems to be more willing to invest in higher quality themed attractions when it comes to Sesame Street, they're already opening two new additions in 2023--barely a year after opening the park--there's plenty of room for additions, and they need a marquee attraction to make the park worth visiting in the months when the water slides are closed.
It probably helps that SWSD is limited by height restrictions due to its proximity to the water and the area of town it's in, which effectively stops them from building wall to wall roller coasters. Unless they want to have an entire park of blue low-lying family launch coasters they'll probably need to start exploring other types of new attractions in the coming years, now that most of the land with higher height limits has already been filled with coasters. I'm curious what the plan is for the other two Wild Arctic simulator bays that won't be the Arctic Rescue station and still have the exit doors in place. If it's not a maintenance area for the new ride or something then maybe it'd be a good spot for a flying theater--something that could be duplicated at SWO, BGT, and BGW, which we know the company likes to do.