I've been meaning to get one but I need to know what the rest of the library looks like before dropping cash like that on a 1-game product.
Here is a list of confirmed games.
http://www.ign.com/wikis/nintendo-switch/Nintendo_Switch_GamesHere are my initial impression on mine so far.
It's a bit large as a handheld, which is both good and bad. It will take a little getting use to it's size but that is no big deal.
The joycon are by far the thing most people are going to have issue with. They are small and the layout is far from optimal for playing. It is probably optimal for being able to be used in every configuration. For many single player games most people are going to want to shell out of the pro controller, or wait for some third party controllers. The small buttons and closeness of them will be an issue for those with larger hands or those use to a PS4 or XBO controller. When the joycon are in the grip or charging grip the IR camera is alway facing your genital area which I personally find disturbing.
Even though the Switch has a USB-C port that has video and sound when connected to my USB-C monitor it only charges the Switch and isn't recognized as being connected to external video. This is unfortunate as it means later you will have to buy some adapter to use on such displays or carry the base with you when you travel.
The launch day game offerings are slim, but there are many games on the way. Games are a personal choice so I wont go into any specific game but I will say that for most people the game offerings at launch are going to be very meager unless you are looking for the novelty games.
Performance wise the system is pretty much what you expect from and NV Tegra device. People have reported that the frame rate on Zelda drops occasionally and wether that is a software issue or performance issue remains to be seem. There have also been reports that one of the two (usually the left) joycon will stutter or disconnect for a second when in detached mode. Again that could be software or it could be performance and we have to wait to see how Nintendo addresses the issue. When connected with a charging grip or directly in handheld mode this is not an issue.
Currently there is also no way to backup your game saves either by copying them to the SD card or saving to the cloud. This is a big issue and I can only assume it will be addressed quickly by nintendo but again we have to wait and see. Which brings us to the network and online services. Currently the online service is absent aside from the eShop and some games with multiplayer. I did download FastRMX but have not tried the multiplayer yet. Nintendo was open that the online service wasn't ready and that is one of the reasons why everyone will be getting it free till later this year.
Some things to note, the Nvidia Shield which is almost identical spec wise to the switch is capable of 4k video but not gaming. It would be nice to see that added later. It would also be nice to see a Steam streaming client so you can stream steam games from you PC. That probably wont happen, but it would be nice. As has been well talked about there is no virtual console on the Switch yet so no playing older games like you can on the WiiU and 3DS. I do not know if Nintendo has said that that will be coming but I would imagine it is when the online services are fully up and running.
We do not know what continued availability of the system will be but it would be devastating to Nintendo if they let the same thing happen with the Switch supply chain as happened with the NES Classic that is still unavailable to most people. If you are not worried about availability and none of the current games interest you then waiting isn't a bad idea unless of course there are supply issues.