Well, in a nutshell, I don't agree. Certainly, Nintendo should find a way to aggressively differentiate themselves and add value to their game-only product in the next generation, if they really are going to stick with that, which as most people I fully expect. I just don't feel the investment/expense in this whole thing with the built-in LCD screen to relieve some of the complications inherent to LAN gaming is justified, I'd rather they put those resources into other aspects of the machine, which is the subject of a different topic altogether. It's true you eliminate some of the hassle of LAN gaming by providing people with what is basically a TV with each GameCube, but that hardly solves all the problems. You still have to have enough power outlets, which means a power/surge protector strip for most people, thats just one thing. And then there's the actual size of the screen in question.
Even if the system ends up the size of the Xbox, which it won't, I could almost gaurantee a similar foot-print to the current GameCube, you can't really incorporate a substantial enough screen to get the job done right. A 15 or 17 inch screen is really only good if you have it plenty close, as you would with a computer monitor, which makes for an awkward image in my mind, a bunch of people in odd positions trying to get comfortably close to their respective machine, some out right planting it on their laps... just not kosher. If you take into account the possibility of multiple players on any one console... oohh boy.. forget about it.. that'd render anything unplayable with such miniscule display space. LAN gaming is simply no substitute at all for online gaming, >it< is the supplementary element, not the other way around. As for whether or not people would consider it gimmicky, well, I can conceive of few things that could be more gimmicky. There's nothing particularly wrong with a gimmick, but if it's just blatent, and not something I value, then I simply will pay it no mind and won't find the subsequent price point acceptable.
LAN gaming should be available for any of their games, but so should an online option next generation, or at least leave it open-ended, so people could enjoy a LAN match while they wait for the infrastructure to be set up for outright online play, if they so choose to go through the trouble. For the most part, I'd just let third parties figure out their infrastructure themselves, and simply provide the means for players to access that, with LAN options available from the get-go if the third party in question sees it fit. Just because Nintendo sees no profit with online gaming it doesn't mean third parties would agree, for the most part they don't. Eventually, they're going to have to leverage their capital some, I feel when they do it should be to design and build an infrastructure for online gaming that >is< profittable, or at least inexpensive enough that they can absorb the costs and have a reliable, secure, friendly service for gamers available. Maybe that's asking for too much, I don't know. But, to fight that trend, to continue resisting it into the next-generation, that's futile, and it's a battle they'll lose. I don't give it much importance this generation, but next it'll be an entirely different matter as far as I'm concerned.
My true point of contention does simply come down to the fact I want the resources built-in LAN-facilitating features demand to be spent in some other way. A little extra RAM, some extra specialized writeability option, built-in GB player, that sort of thing. The idea of having some sort of peripheral that makes the system easily portable is still viable in my opinion. Maybe not for LAN play specifically, but some screen/hefty battery combo, some packed in AC/Car adapter, make it real easy for someone to take it on a camping trip or a long road trip or some such. Third parties are right now providing this >sort< of peripheral product, but you know how it goes, a first party rendition of any peripheral tends to be of higher quality overall.