I honestly think it is nearly impossible to do this with ntrboothax, Let's take for example the single system ntrboot, with the R4i 3DS RTS Gold. Firstly, you need to flash it. You download the R4i firmware, and the ak2i flasher, put them on the R4, and run the software. Only thing I can imagine being done to simplify this process, is a special zip being made that you just extract to the R4i's SD root that does its own magic by not having the user press any button. You just launch the R4i from the home menu, and it does some magic, and it exits by itself. However this is very impractical since you'd need to reverse engineer flashcart firmware. We are already using a lot of our resources to make as many flashcarts compatible with ntrboot, I just don't see the reason to waste manpower on making it easier instead of using that manpower to increase compatibility. Afterwards, you take this flashed R4i, then you do the magnet trick. You cannot make this easier, since this is purely a user thing. I can't pop out of someone's monitor to do the magnet procedure on their 3DS. It is what it is. Then, it boots into SB9SInstaller. This is pretty simple, and with OCS the button combination for SB9SInstaller is still there. We cannot alter this. Afterwards it boots into the Luma config menu, and this also cannot be altered. After all this, you have finished installing CFW. You simply cannot make this easier than it is. The most that I can think of is making prepackaged ZIPs ready for users to extract. While for some this would make the process easier, personally, I think this is a very insignificant step. You just cannot make ntrboot easier than it is.