Any software they use today should be adapted to work with the traditional script. How are they going to mix their new script with Latin-based or Cyrillic scripts? What about adding math to the mix? I hope they invest in solving these issues, it would be very interesting to see the outcome.
The current situation is this: "As of 2015 there are no fonts that successfully display all of Mongolian correctly when written in Unicode" [1], meaning that specialized software using Private Use Areas of Unicode are the only way to typeset it.
[1] https://en.wikipedia.org/wiki/Mongolian_script#Font_issues
If you're learning to read Latin (etc) script for the first time, it doesn't much matter what it's orientation is - they're just symbols.
It's not uncommon to write capital-E with cursive strokes so it's a reflected or rotated 3, and lower case m and w are sometimes written similarly - so as to be very close to rotated versions of the same character.