Possibility to implement more styles for Doulos SIL font

Seen from Galatia SIL and Khmer Mondulkiri fonts, I think it’s possible to implement Doulos SIL Bold and Italic by make extensive use of OpenType technology, and the font will still be single TTF file, ital feature and font variation paved the way for this.

We have no plans to add more styles to Doulos SIL, it’s a very old project and would require considerable effort to add more styles. We have very few users asking for it, as most people prefer our other serif fonts: Charis SIL and Gentium Plus.

Is there a reason why you are using Doulos SIL instead of our other fonts?