I like Adobe add great features to InDesign:
1- Ligature Manager: to enable \disable specific ligature(s) in a document, since Unicode and opentype revolutionized the typography abilities.
2- Kerning Manager: to enable \disable specific kerning pairs in a document, since many non-latin font metrics are badly calculated.
3- Equation Editor: for maths, chemistry… etc.
4- Footnote Improvement: to enable user to add marginal footnotes, put footnote in columns… etc.
Very Much Thanks to Adobe Brains.