The Aculux housing in that link is a premium fixture. It comes with a stippled clear uniformity lens to eliminate striations without altering beam spread to help smooth out hot spots as you requested. It has better lamp positioning, too. Use a good lamp like GE constant color. FNV lamps are about 55 degree beam spread if you need it wider. EXN is the 40 degree normal flood everyone stocks. Almost no one stocks constant color so you might have to order. Philips is supposed to have a comparable constant color lamp but I’ve not tried them side by side.
One reason recessed is so popular compared with track is that track adds visual clutter with the strip of track and fixtures hanging down from the ceiling. Many object to recessed fixtures with anything sticking out of the ceiling as some trims do. 4? or 3? low voltage reduces the aperture size for less of a hole in the ceiling. It is not uncommon to use a slot aperture trim and have them painted to match the ceiling for minimal ceiling interruption. For insulated ceilings use IC airtight housings and fully insulate around/above them to minimize energy losses.
In the Aculux line there is a lensed wall washer that helps spread the light. It has photometrics listed to work with.