I have a feeling that the rockwork itself here and there is going to need some TLC sooner rather than later. It is becoming cracked apart in some places, such as after the second lift hill. Here is how the first dip after the second lift hill (when you first enter the mountain) looked back in 2006 when it opened:
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Here is that same spot in January 2019, 13 years later:
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Eventually the cracked concrete "snow" will need to be upkept, just like any other attraction. Remember when Splash was literally falling apart? I bet a lengthy refurbishment is not as far-off as some may think. The only question is whether Disney will cough up the $30 million (according to WDW_Pro) needed to fix the Yeti. If the company isn't even willing to pay puppeteers and band members, I think we know the answer.