Considering that the info was quite prevalent about how easy the NES Mini was to mod on the first run, Nintendo could have made changes with the SNES Mini to try and prevent easy modding or at least require a different method to mod it. Yet, they didn't seem to care and modding the SNES Mini was pretty much the same and as easy as the NES Mini. Therefore, I doubt they are going to take the time to go back and try to change up how the NES Mini works to make it harder to mod at this point. Most likely, they're just spending money on another production run instead of redesigning it since there are already a few million of these in the market and its just about reaching some of the other consumers who had an interest in it but weren't able to acquire it in the first go around. From a business profit standpoint, I don't think they want to put more money into this second round of production than they have to especially since they might still be unsure how much of the market will want it after the larger SNES Mini run seemed to satisfy the majority looking for it.