While I do appreciate the "casual fundamentalism" behind this, I have to disagree. Grinding for points was anything but low pressure environment. Wrath is the only expac I've quit, and it was due to the atmosphere that pervaded the casual/social guilds. There was a constant pressure to "get the best stuff first" (this was a guild that didn't raid and didn't run dungeons). I'd guess many casual players would completely burn out, should a system like that be implemented now. It was not fun to be casual player in Wrath "end-game".
The rep rewards are 850 - none of the other casual content provides base 850 rewards, so they're not useless. I think you overestimate the amount of people willing to run dungeons and/or LFR. And even then, getting 850+ gear needs a random WF/TF procs, which is.. random.. I've plenty of guildies who've proudly and happily linked their latest upgrade from rep rewards on /g. I can understand that people who raid or grind mythics think they're useless, but maybe they're just not the correct taget group? The rewards are just fine for us "normals".
When it comes to forcing raiders to get stuff - again, I appreciate the idealism - but we both know it doesn't work like that. Raiders are the most active and vocal user group in this game and if Blizzard had forced them to grind all reps to exalted before EN opened - well.. none of the other forum shitstorms of late would have compared. And you know Blizzard would have caved, because they always do (and because the design team is mostly old Elitist Jerks raiders).