Who says PKI is taking out anything? The Action Zone area of the park is already overcrowded so even if they did take down SOB or TG, there really would be no room for anything. There is really only two big and easily accessible areas for expansion:1) On the other side of the racer, where the Safari ride was, and 2) Behind Tomb Raider. There is a large area in between The Beast and the Waterpark that could be developed.
As for removing rides, I don't see that happening. Let's look here:
The Beast-No way in HE$$ this would be removed
The Racer- TOO much history
SOB-Yeah, lets put millions of dollars into something then tear it down. If you believe this is going, then next year CP is removing TTD to build a new woodie
Vortex-Only multi-inversion in the park, next
Flight of Fear-very rare ride which is still a draw for people, personally, i would stop going to PKI if they took this out and I live 30 mins from the park.
TG-alright, I agree, not the best, but for those of us who remember The Bat, this is a blessing. Probably some contract thing with S&S(Arrow) that they can't remove it.
Adventure Express-This would be my guess for removal, but then again, it really frees up no land or anything so why bother.
Here is my best guess knowing the park. I can see them building something behind TR. There's a large area of land there were they could build something huge, plus it would draw people back to the part of the park again.
In my ideal world, here's what I see. I want to see the third ride in the serious. That's right, I want.....wait for it......keep waiting......I want "The Mother" come one, you had to see it coming, we have father and son, now lets see what could produce the spawn of satan himself. And here's my ideas. A gigacoaster like MF, but not big for reason of being taller, more for fear. Like I said before, there's the area the Safari tram used to run in, so hypothetically, if you build it long enough, you could have a coaster that intertwined with both SOB and The Beast. It could start out behind the Motion Theatre at the back of The Racer and soar down inside the loop on SOB then maybe go inbetween the double helix on The Beast. Now I know what you're saying, THAT WOULD BE A HUGE COASTER!!! And your right. But PKI has a history of not doing things the normal way. Plus, let's get over the height issues that everyone is chasing. How bout a coaster that is long and exciting, you could do so much with a 7000-8000' coaster, or even longer. How bout a huge terrain coaster that covers A TON of area. Now who wouldn't want to ride that. Plus, if you build something that long, you might be able to run 5-6 trains at a time, talk about keeping it moving.
Now, that's just fantasy, but remember PKI never does anything just "normal" Think The Beast, The Bat, Drop Zone, Flight of Fear and others. I think if they do build something, it will be great.