Yes I do believe they have another method. The reason for not releasing it? IT ISN'T STABLE. They might not have another working method but I believe they do. They have proven time and time again that they deliver. The damn console has only been out 3 months. People are acting like this is the final method and I can guarantee you it isn't. They ran into roadblocks and rather than make people wait longer, they release a way for people to use their product. They are not just simply coding their own software. They have to poke holes in software that is designed by teams of engineers that develop it for years so they can't. Finding exploits is difficult as hell and you all are acting like they just can't code or are withholding information from us. What the hell do they have to gain by requiring people buy OoT? It's not like if you buy a copy of OoT they get more money. Jeeze, they release a half finished update to stop people bitching and it just causes more bitching. If I were GW, I would just quit and develop for myself.
GW having a cardless exploit is pretty unlikely at this point. You believing in it won't help that. Of course it's much easier to find an exploit if you can use the whole range of software available for the console. Your options are quite limited as long as you stick to the applications that are available on every console from the very beginning. The O3DS had Spider and MSET, which both can't be used on the N3DS (Spider not being part of the firmware anymore and MSET being available only in its patched form). Maybe this Mii Plaza exploit thingy was actually a thing. If it was, it prove to be pretty worthless, since it seems to have broken more than just a few games (many of the good ones, actually). So, they'd need to come up with something totally new which no one thought of yet. And as stated above it needs to be part of the firmware to be convenient. And something like that isn't accomplished within a few weeks, maybe not even months.
Can't agree with you on the point of GW being the savior that doesn't get enough appreciation. Broken promises are involved in this. And GW actually did these promises to sell their card to some customers. Gladly, I bought my GW way before this, enjoying it for quite a time now, and thus I'm not entitled to anything beyond what I was promised when I got mine, but I still can understand those who just bought a GW flashcart for their N3DS, thinking that they could use it without any extra hardware (as stated by GW themselves in an announcement). GW owes these people something for their money. GW are not free-time devs. They are paid for their work. And you have to be a very big scumbag for wanting to quit just because you yourself made the mistake of upsetting the people who fund your life.
Edit: Feel free to tell me about your very situation right now. Do you even have a GW flashcart? And if yes, do you have an N3DS? And if yes, do you have all the requirements to use GW on it?
If either all of your answers are all yes, all no or just no on the last two questions then I couldn't ever take you seriously, because your point of view is based on you not being affected by this at all. "What do I care, so why should someone else care?"