Raid finder excludes people based on experience though. In Raid finder you can choose to only queue with people who have cleared, only people who want to do the first phase, or only people who want to do the last phase. You can't select it for all, which divides up the already small number of people who would use Raidfinder, and people just make PFs for the above options anyway, raidfinder is redundant. DF works because it mixes people who have cleared, and all the other people of varying experiences. I am someone who likes helping people clear content in DF (I am still proud of when I helped 6 first-timers clear the whorleater before HW came out), and I really miss the DF experience.
:I Plus I like the anonymity of DF when I am learning something. PF has my name plastered for everyone to see and remember when I am failing in a learning party :I