I think that Jhon understands the frustration here and we must think that although there's a flaw in the age's design, it's not programmed by a team of professionals that can address the issue in a nick of time. Jhon must do it as hobby and have plenty of other things to do. Maybe the best would be to suggest him to see with Dulcamara which has been successful implementing saving points in her ages or Denost. There might also be language barriers between all of the writers mentioned.
And remember that the final product is always very nice made of visuals, sounds, & all other attractive stuffs for the eyes but the code part is somewhat rather dull. And yet it had to work. I'm not a programmer but I'm able to understand that adding saving points might not be the easiest task there is. And again Jhon is working alone not development team supporting him. Korov'ev said that he took 13 months to achieve this age. So...
Those saving points might be there in July or August or even in September only...
You can do like a lot of folks and wait for the offline version. I'm at this point now. Jhon said I need to be in a "special mode", & he insisted on the fact that I was "bugged" not having the shadows ON... I'm guessing there's something correlated here. I'll wait for the offline version though to move around a little easier. The frustration to redo for Nth time is understandable, I do feel that too but the ability to play fan ages online is an opportunity not the default choice.
Playing online adds layers of issues:
You cannot insure the age you left in a state will be in that same exact state the following visit,
More players are inside an age, the more the age becomes laggier,
Most of the puzzle ages (like Lonirvan) are locked to avoid cheating,
Players can do action within the age your playing too that will close your way,
Players in the same age will start sounds in sound regions that have nothing to do with your own section,
Some sections of the age have bugs (like the 'S' Bridge in Lonirvan), Jhon never intended to make us fall.