What do you want to know about the old factions? They're laughably easy to get to exalted now, if that's what you mean. Between easy cloth turn-ins and, more importantly, the tokens they added with the Argent Tournament, the old factions take little to no effort to max out. Will they still take some time investment? Yes, but they should. There are achievements associated with them, it shouldn't be something you're handed at level 1. Hell, if you start a new character these days, you can have more rep with your off-factions by 80 than vanilla toons could get with their main factions by 60. They removed diminishing returns on reputation gains, they added low level quest tracking to help people find quests they missed (This was done both to help with Loremaster as well as reputation gain), and they've added special reputation tokens with the Argent Tournament. What more do you want on old factions?

Regarding AB and WSG rep... who cares? They're right, sure it takes a long time, but they're useless factions, only good for adding to the Exalted achievement at this point, and some BG specific achievements. Since they're -achievements-, it's right they take some level of effort to obtain. I've been playing since vanilla and am currently only Revered with both, but I'm fine with that. If I really want them I'll put in the time, but the fact that they're hard to get is fine since they provide no tangible benefits anyway. They're legacy reputations that serve to show someone has a great deal of experience in those BGs. I see no reason they should make obtaining Exalted with them easier.