FSX or Prepar3d ?

. Most people do not want to install ANOTHER add on utility (as if we didn't have enough already) just to fix one or two things.

Actually for those 2 items you don't need an addon, you can just make the change in the config file. The only reason the addon manager would be of any use, is without it if you make a change to the settings via the FSX GUI then those values would revert back to FSX limits. The addon manager forces FSX to retain those settings. Besides if you have any of FSDT's addons which many of us do, (Airports, GSX as well as some other developer products that use it) you already have the addon manager installed.