What you mean by "a little more fair"? It's pretty easy if you ask me! Granted, it was hard before you are level 60 or so, due to unable to properly upkeep the full roaster of 12. But after that, it IS easy.
I, as a ftp, have completed survival(including 3-4 breakthrough) while using only ninjas found in elite instance, half the time with no loss, half the time throwing 1-2 team of fodder to soften that ptw who is 1-2 levels and 2-5k higher power than me when I run into them.
I've only failed once when i got 2 of those ptw in a row, and at that the strongest ones in the server, in the month or so I've used those teams.
As of the last month, since I got lucky with treasure and got sage naruto, 90% of the time i clear everything with no character, rest only 1 char loss(GNW kankuro while it was 2 star, too soft). There was only ONE time when I had to throw a fodder team, again at a top ptw.
Currently, I'm ranked top 5 in survival and top 3 in breakthrough, #1 in survival is owned by a fellow ftp(let me tell you, them ptw are lazy. I'm sure they CAN do it but... ) with no hope of me catching up to him because survival is so easy, neither of us will fail. Unless he misses a few days....
I'd rather want the game to up the difficulty along with reward, so it can actually separate the weak from the strong (btw, ptw isn't the only path to being strong, carefully selecting teams and observing in battle to counter enemy are more important). It's sad when everybody who is anybody have survival on farm and experience no challenge in it.