Here was my thinking from the moment they announced the re theme of Splash.
I thought real reason in the inside was COST SAVINGS. And t to the outside world it was social justice.
The can kill two birds with one stone; cost savings and social justice.
As for the real reason of cost savings, while yes, its a costly re theme, but consider that all the technology in Splash was very old, maybe they had no more spare parts, many replacement parts perhaps needed to be custom made, very costly, perhaps they lost all institutional knowledge needed to maintain the very old Splash technology etc. Who knows, maybe there are accounting tricks because this is entire project is cost reduction maintenance.
I am guessing Splash did not get maintained because it was simply TOO EXPENSIVE to fix and or maintain.
I am guessing Tiana's new systems and hardware will be easier to maintain, therefore will get maintained.