Parsers do not violate the TOS. If that was the case they would instantly delete all topics linking to parsing websites. In fact im pretty sure the whole reason they added combat logging was so that people could make parsers.
If you are really struggling with enrage your raid should be using a parser. I dont get why thats such a big deal to you. Yes it would be convenient to have it ingame but I highly doubt its going to happen. Im sure if you go back through the 1.2 dev logs you can find discussions about why they did combat logging the way they did. Im almost 100% positive that I read that somewhere that they didnt want people to get that "epeen" syndrome (my words not theirs)
It's not a big deal, I just don't think it would be a bad thing if stats were added to ops and flashpoints, even if they only showed yours individually. Could I use a parser? Yes, but my thought was since they can do it for pvp, what would it look like if they did it for pve. I honestly don't think it's as big a deal as others do and I'm certainly not going to unsub if they didn't implement something like it. It was simply a thought.