Since I have already been fantasizing about a Televue 76, I might as well finish it with the appropriate Televue accessories. My first accessory will be the excellent Panoptic 24mm, which would deliver 20x. To get more magnification, I would just barlow up with 2.5x Powermate (1.25") or a 5x Powermate (1.25"). Another idea would be to place a 2x Powermate (2") or the 4x Powermate (2") forward of the 2" diagonal. Of course, this would change the magnification to something more like a 3x and 6x, repectively. Or hey, since this is a fantasy, I could get them all.
That's an amazing amount of detail for a daydream, but such are the mental meanderings of an optics addict.