I have almost two dozen shoe mount flashes.
Used to have tons of Metz.
In 2006 I suggested they build a flash with manual
power settings exceeding their dated full/W/M range.
They answered that they don't see a market there.
Today about EVERY flash has manual settings at
least in full stops from 1/1 down to 1/64, some
down to 1/128 or even 1/256.
Every flash except most Metz devices.
Then I told them the world was ready for a ringflash
meant to fill in at very close range for wedding/event
shooters. made very clear that this ringflash must
work on the most frequently used lenses in these
genres, all with 77mm filter thread.
Took them two years, and then they produced the
MS-15 light. With 72mm filter thread.
You lose when you go to a gunfight with a toothpick.
German wages were not the problem, their product
portfolio failed big time.
What flash do you have (other than their old handlemounts do you have?) I've had the 50 series flashes, 70 series flashes, etc and they all had manual power settings just like Canon flashes... Even the cheaper 54mz went from 1/1 to 1/256