i kinda think all the command line hud options in the launcher should be set based on hud_gauges.tbl settings instead.
no no, this is'nt going to be a feature addon that is applied to all craft. Instead, the N-gon constraints will be for specific craft or factions, depending on what the mod developer feels they need.
TTF has three major factions: GalSpan, Bora, and Neutral. Each faction not only has their own fleet of craft, but also their own corresponding hud. Bora, in particular, has an octagonal radar area vs. the standard oval. (So it's implied that N-gon radars will have to be a hud_gauges.tbl setting)
I don't know if FS will get a HUD configurator to allow players to customize their HUD for multi.