As per @wpwrak post:

Eagle to KiCad:

• motivation
  • Nikolaus will definitely not be available for layout (gave signs in that sense Feb 2016, confirmed July 2016)
• technical
  • we considered Altium, but too proprietary and expensive
  • KiCad routing capabilities are superior to Eagle's
  • we now use version control (git), making changes traceable
• community
  • development process is now much more open (discussions on #neo900)
  • public access to design files ( https://neo900.org/git/?p=ee )
  • design process now uses only Free tools [right ?]
• internal organization
  • we're no longer blocked/slowed by uncertainty about future GDC role
  • communication flow Neo900 <-> GDC was hampered by incompatible tools and workflow (for a long time)
  • this caused change requests to pile up, and we used white papers as a means of documenting what we couldn't change in the schematics in a timely manner
  • we can now operate in a more schematics-centric mode, using white papers only where something actually needs explaining
  • entire project team can make changes also to layout, if needed (though "dedicated" layouter is preferred)
  • ahycka offered to do it in Altium, seems sympathetic to idea of using KiCad (still to be confirmed - we first need to do our homework, see below)
• progress
  • completed bulk of the conversion
  • now fixing bugs (some only discovered during conversion)
  • next weeks: incorporating material "parked" in white papers
  • next weeks: define BB-mX interface
  • ... ?
• downside
  • reduced access to OMAP know-how (though we hope Nikolaus can review our work)