The Visual OpenType Designer certainly makes it easier for non-professionals to add OpenType Features, but Professional font designers are probably more comfortable with coding. I know at least one FontCreator user who prefers to use the Code Editor, and I often use it myself too, although the visual approach is more convenient for seeing how things work.David Perry said:I particularly like the tools for creating/editing OT features in Font Creator.
Times Extended Roman (TXR) was promulgated by Microsoft during the early 2000's as a kind of stopgap measure due to the broad implementation of Unicode throughout their system. Times New Roman (TNR) did not yet cover the Unicode Latin Extended Additional area that included many essential fonts needed by scholars of Buddhism, most notably underdot characters. TXR was released with coverage of this area. However, with the release of Windows Vista and Office 2007 (and of course, Win7 and Office 2010), Microsoft updated TNR to cover these areas (and more, and with more refined technology), making TXR redundant.