It sounded good in theory: make them interesting to all levels with level sync and by providing endgame rewards, make them easier to get to by handing out instant travel gadgets like candy etc. but the pratice has just been... weird.
The combination of all [Heroic 4]s getting downgraded to [Heroic 2]s and combat in general becoming easier - while our characters and their companions got more powerful - means that heroics are a complete joke to solo now. It's not a matter of being high level, having good gear or having a high-influence healing companion. I went to Savrip Island on a newbie smuggler with Corso set to tanking mode, accidentally pulled three groups at once and survived without too much trouble. Alone, in a heroic area. What the hell?
Because these "new" heroics are so easy and a major way of progressing your Alliance at endgame, lots of people do them. All the time. Whenever I've tried to do any of them that weren't inside an instanced area, there was always crazy competition for all the spawns. Why is the Dark Temple on Dromund Kaas so busy at one o'clock in the morning, you guys?
It makes you want to stick lightsabers in your eyes! (Love that graphical glitch.)
The old "regular" daily areas on the other hand are virtually abandoned. The other week I fancied doing the Black Hole on an alt that had never done it before and my jaw dropped when the little indicator in the top left corner showed me that I was literally the only person in the zone. This has never happened to me on The Red Eclipse before, anywhere. Even if I'm in some obscure story instance at the edge of the galaxy, there's usually at least another couple of people doing it at the same time. But the Black Hole? Nope.
I tried Section X next. That one had four or five other people at least. I tried looking for a group for the [Heroic 4] (which was still labelled as such) but nobody responded to my repeat requests while I made my way around the zone completing the other missions. Eventually I decided to go in alone after I had seen a Jedi do the same. The mobs in there have actually not been downgraded and are still scaled for four players (which made the combat at least somewhat fun, especially the boss at the end), but all those mechanics that used to require other players to unlock doors and such have been removed. Not a pretty solution, but sensible considering the population of the zone.
What bugs me about all this is that it just feels wasteful. Based on the theory, it sounded like the changes to heroics were going to make casual, non-instanced group content a bit more accessible. However in practice, they are so faceroll easy that there is little point in grouping up for any of them (unless you're short on cash and want to benefit from the insane multiplier for bonus missions). If you are playing in a group anyway and are looking for some open world content to challenge you and your friends... there just isn't any now. (While levelling my Vanguard I even soloed a duo of two champion mobs at the same time, with no healer... what does it take to kill a character these days!?)
If you're the type of person who liked to run dailies before, you can now run the heroics instead and get more bang for your buck. Regular dailies feel pretty pointless though unless you're trying to work on a particular reputation.
So basically, they removed one "tier" of open world content (the stuff that could challenge an individual and was fun in a group) and obsoleted another one (regular dailies). It makes me sad to say that I don't see the win here.