fortunately, I am not seeing a lot of issues being posted for the CVT in the Gen 7 Maximas. Mine has about 64,000 miles and I just had the dealer change the fluid. No issues identified at that time.
Any thoughts on the necessity of a CVT fluid cooler? The Altima fora are full of transmission discussions. Currently, I am monitoring the CVT fluid temperature using the ScanGuage II. The tech support folks at ScanGuage provided the "XGuage" codes to talk to the 2012 Maxima transmission computer. It returns "count values" for temperature instead of a hex value that can be easily converted to degrees F. You just have to use the look-up table of count values. I attached a zipped copy of an Excel spreadsheet, format .xls.