Think it's harsh to say they've let KSM rot, given the trouble they had with redoing Scenic to modern standards, I dread to think how much it would've cost them to modernise that as well... Plus the money issues they've been having doesn't help...
If such additions keep the park ticking over a little bit then sure; I've no doubt there's work in the background at continuing the heritage 'theme'... Indeed, there's more than just the rides at work in that sense...