What i didn't like on tlfr was all the singing in the lower keys.
That just showed how much Jon was struggling with his voice those years.
Since the LH tour, i am so convinced that they could play all songs again in their original versions as far as the singing goes. So, acoustic versions of the real songs, that would be amazing.

Bryan Adam's unplugged is a very good example of a graet acoustic record.
One of the best. Oasis are also very good when playing acoustic.

But, for now, let's have a big rock album named 'the circle'