Pleas add support for unicode texts. German language needs this!
MeshPocket Unicode
Again, bit MT generic rather than Heltec/MeshPocket specific.
Changing from 8 bit to Unicode would be huge change but unnecessary - the InkHUD already supports Windows-1252 character set - this is in the MT docs & there are open issues on GitHub for this.
Regarding the E-Ink there are problems showing ü, ä, ö. My other MT devices with displays to not have this problem. So I expected, it would be a heltec issue and not MT?
Probably a function of which type face is being used.
Due to the nature of MT I’d not expect Heltec to be able to run interference on all the combinations available.
It would allow the community to help you better if you could increase your output - like tell us which displays this does work on so someone, if they feel so inclined, could look at the different configurations and maybe make what you want to happen, happen.
Or even look at the code base yourself 
Can you tell me which model it is? We can research it.