I Just checked and there is a definite drop in Transponder power a rough estimate would be around 3-4db at least, So i suppose for some people this could be the margin needed for reception.
We have seen something similar before on 10° east with MUTV a real low drop in TP power and then a few months later a boost of almost 6db signal strengh
ESPN 15W Was just fine last night when i checked it ..i'll look shortly i doubt if 15W sat will just all a sudden quit working its been there for years and years already ,lol
There will be a new satellite for 15w called Telstar 12 VANTAGE and scheduled to be launched later this year. https://www.telesat.com/our-fleet#telstar-12v
But i dont like its coverage and power... Long live to Telstar 12! It is still alive and kicking since 1999!
P.S. both espn works fine atm maybe signal alittle lower.