Quoted from RTR:Even if they don't replace Peekaboo Smaug with something better, they need to remodel that whole piece - the lair, treasure, Smaug himself needs a lot more detail beyond teeth. That could help a lot.
And they have 2 months to pull it off. They have to make sure that any changes work.
What you see is what you get other than cosmetic changes.
Peekaboo Smaug will remain the same.
What makes you think they can change something in 2 months that took them 2 years to get to.