Both DA:I and ME:A (and all of EA's AAA tiles going forward) employ the FrostBite game engine, which is notoriously difficult to mod. There is no "Toolset", and DICE (the FrostBite development studio, also owned by EA) has not indicated that there will ever be one. (Although they haven't yet ruled it out.)
Fortunately, there is the DAI Tools Suite (available via the DAITools Suite Loader) developed by a dedicated team of hardcore modders. So I expect to see the same kinds of mods for ME:A as we currently have for DA:I. That basically means some appearance stuff, some crafting stuff, some gameplay tweaks, but not much else.
I'm not complaining. I'm truly grateful for what the Modding Community has been able to do (e.g. I simply cannot play without Quicker Looting) given the extreme limitations under which they're operating with this engine.