See, I wouldn't mind this. But as stated many times:
1) 4.2-4.5 Firmware required to run GateWay - If a firmware updates cannot do anything to block the GateWay on 4.5, as that wouldn't make sense because one with Gateway wouldn't update.
2) Yes, 3DS games may end up shooting out extra security measures blocking online function, (ie: Mario Kart 7) - I could care less about this, as I've grown up with Pokemon Red/Blue etc. I don't care for online. To me that's just an 'extra.
3) As with the PS3, it's highly probable that the (Ripped) 3DS games will eventually become compatible with the 3DS, through various AP patches. Look at the PS3. Kernal access. Due to the fact that users shouldn't go online, and the fact that they're on the firmware, (Which Nintender can't change at this point, because, well... yeah) games will always make their way to become compatible with the GateWay or other future carts.
(tl;dr) Not sure if that made much sense, supermultitasking at the moment, but my main points are::
1) Online may never be accessible. But even if that happens, it's not the end of the world. Look at the PS3. It's rare that they release a solution (****PSN) app.
2) Games will likely always end up becoming compatible. Sony's known for placing more serious measures on their security on their consoles and handhelds, and still, every new game is compatible with the PS3, as far as I'm aware. Maybe they won't be right away, but they will end up being so eventually.
As far as we're on this firmware, I believe all games will be playable on gateway, even if it takes some time to release AP patches and whatnot. (Yes, I believe Pokemon and Zelda will work. I'm pretty optimistic - rare to find on the net, but yeah. It may take a bit longer, but the GateWay Team's shown to have very good knowleadge in hacking, etc. Even if it's not their exploit (Really don't care if it's Yellow's or whatever.) they've released spoofing checks and region-bypassing (WHICH, by the way, many thought were not possible... and now people are saying PMN and Zlda will never be compatible... stop being so damn pessimistic. It's annoying) so I have little-to-no doubt in my mind that Pokemon Y/X will be 100% playable once they come out (Despite the improbable online - Which, is a good move by the team.)
As we say on the PS3 forums, If you want to play online, update your firmware...