Why not 1 or 2 cameras with 24-480 or less zoom range and keep the size/weight similar to older ZS models? I think there may be a market for that type of camera. I'm not convinced every camera needs a 1" sensor or larger. Keep the cost to $300 or so. In good light I sure don't see much difference in IQ on my 27" 5K iMac between images shot with my now dead ZS19 and my 1" sensor Sony RX100i.
Den
Agreed that the size has become awkwardly large, but so far the ZS70 works for me to use on belt, especially with the new case. I'm still able to get quick one-handed shots. However, I often carry my ZS25 instead as it is less obtrusive and still small enough to fit inside my pocket, even with the case.
For something ZS 19-30 size, Canon and Sony still have cameras in this size class with decent zoom, also Casio I think.
However, I'm trying to stick with Panasonic for various reasons, probably because I know the general menu and control layout so well.
I would prefer to stick with Panasonic also, but I guess I'll go look at Sony and Canon. Do you see any improvement in IQ with your ZS70 over your ZS25, I don't think I did?
Den
I'm not a pixel-level viewer, so no, not a dramatic improvement. What I do see is 30x vs 20x, which gets me closer for picas (small mammals) and eclipses. Together with the increase in pixels a lot more room for cropping/digital zooming.
All photos hand-held, straight out of camera.

American pika (Ochotona princeps) in Washington State Cascade Mountains, about 6,000 ft elevation.
Also the tilting screen is a delight. When filming the eclipse, I could stay at a comfortable angle whilst the lens was pointed up at a high angle.
[ATTACH alt="August 21 Eclipse from Albany, Oregon. Note the sunspots below the "bite" and opposite near edge. "]1820246[/ATTACH]
August 21 Eclipse from Albany, Oregon. Note the sunspots below the "bite" and opposite near edge.

August 21 Eclipse from Albany, Oregon. "Totality"

Wildflowers in Washington State Cascades

Distant herd of 17 wild mountain goats in Washington State Cascades. Note the three youngsters!

Crickets or Grasshoppers? clinging to the last warmth of day, Washington Cascades
I've found myself using the tilt several times since, especially for low-angle wildlife macros, things like flowers and bees. Also low-angle wide-angle landscapes with flowers and rocks and water in the foreground, helps greatly with the framing. Also the horizontal and vertical level indicators.
Larry
PS: Still discovering new and interesting "features" I haven't explored. Overall I'm rather impressed.