Putting aside your other objections about the randomness of loot, heroic scenarios require a group to be made in advance so I don't understand why this is a problem. Whatever you are, find the other two.
---------- Post added 2013-05-22 at 04:14 PM ----------
I would question just how unpopular scenarios are. Most people I know enjoy them as a break from being in queue for something. My only objection at this point is that I have enjoyed the solo one-time scenarios and would like to do them again. They don't need to be made into a daily or anything, just allow me to run them when I feel like it or when no one else is around.
The new heroic scenarios require a pre-made group which is also something that people are constantly complaining about with LFR/LFD, lack of community. Well, here you go. Make up a group from your server and start the rather large task of rebuilding your realm community. You might make some new friends and if your guild is recruiting, you might meet some really good players that are just behind on gear but otherwise would be a good addition to your guild.