Currently 85% of traces ready.
I have calculated the approximate cost of the card in the full version with all features (including L-connector).
Not to little, about 120 EUR, but most of all I'm doing this project for myself and decided not to save.
Ultimately, the "dream" name obliges

The LED on the visualization is next to the board.
On the real card will be mounted from the bottom of the PCB, and then the legs will be bent up.
The RGB LED should be almost exactly where now is the red LED on the EP board.

The minimum option:
- not has own DCDC power supply from 9 to 5 V,
- only 1 MB RAM,
- manual (potentiometer), with a smaller range (no negative bias voltage), one-time adjustment of the contrast of the LCD display , instead of the program setting,
- RTC chip DS12887 with no "clear NVRAM" function and replaceable battery,
- no beeper,
- no temperature sensor,
- cheaper LCD display.

That gives you 40 EUR savings.
There is still not to little, 80 EUR. The rest must stay.
Completely removing the LCD screen will not save you money (5 EUR) and will make difficult to use the card.
You can also opt out of the RGB LED and LCD backlight (another 5 EUR).

There is still a long way to order.
I need to write the firmware before

What do you mean with 'no "clear NVRAM" function'?, because I already have some spare DS12887(battery inside) chips.

I come from a country where, like in Hungary, every coin is viewed several times before spend

In Spain the money grow in the trees and we tie our dogs with sausages....

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Is the "clear NVRAM" input important for your project?

Last night I've finished routing the paths
Today I will make some minor corrections and I'll send the PCB project for production