TBH im a casual raider atm busy with LK 25 normal ( ph3 ) and i love these changes. I dont get why 25 will be pointless they wil now finnalay be equal, strict 10 man guilds can now get the same loot as 25 man groups. Also this would mean for me that i dont have to raid anymore more then 4 days a weak. And also not that after the 25 man raid (19:30-23:00) a 10 man raid is gonna happen untill (1:30). So a bit more free time and a bit more a life i guess.
Anyways we will need to see how this wil work out personnaly i hope this wont change its a big change for everybody but in my opinion a good one.