The short answer is "BioWare can't do that." And while it may be true that the (relatively) low(er) numbers of players of ME:A compared to more popular games resulted in fewer modders even being interested, there's more to the story. ME:A uses the Frostbite engine. Modding games that use FrostBite is much more difficult than for those using many others, especially the Gamebryo/Creation Engine used for the Elder Scrolls games. Plus, unlike the Unreal Engine used for the earlier ME games, or what BioWare had done for their own Eclipse/Aurora engine used for the first two games in the DA-series, DICE (the developers of Frostbite, then named "FrostByte", and now owned by EA) have never released a tool kit for modders. Their only public comment on the subject was, "Maybe someday..." Oh, and all of EA's AAA games are now required to use Frostbite since; they own it, and it makes it easy to port the code to all the relevant platforms (PC, Xbox, PS, and even Swtich.)