ARMS and Disgaea 5 Complete just on the horizon.
Disgaea 5 Complete is the second Switch remake to have a substantially higher score than the original version. The original having an 82% avergage, and this one having an 89%. It's a very small-niche RPG, as NIS games tend to be, but if you like strategy RPGs on the lines of Final Fantasy Tactics and Tactics Ogre, this whole series is based on that style of gameplay; only it takes it much further. Like the original, the sales are much higher outside of Japan - in Japan, Disgaea 5 Complete on Switch had disappointing sales of under 20,000 units, but in the US and Europe it has over 110,000 pre orders for its May 23rd release.
Strategy and turn based RPGs are making a big come back this generation on console outside of Japan. While Final Fantasy has seen steady decline, it looks like a lot of the smaller series are picking up steam, Persona 5, while it only sold a few hundred K in Japan, sold a whopping 1.5M in a matter of days on its release outside of Japan. That's one I really wanted to see on the Switch.
ARMS is a new sort of title. I suppose the closest thing to it would be Wii Boxing, but that would be the very basics. It's an original title made by the Mario Kart team, featuring 2-4 player battles. There's different weight classes, lots of physics based things rather than simple scripted movements when a trigger occurs (looks like they learned from Breath of the Wild), and a huge amount of customization and weaponry. There's also grapple stuff. I might be the only person on this board who likes motion based games, so I might be the only one excited about this one. It reminds me a little of Splatoon in its wackiness...
Splatoon 2 is coming out a month after ARMS following Nintendo's Switch plan which is to retain a regular release cadence rather than Wii U's "Here's a ton of stuff at launch... see you next Christmas! Take care during the drought!" approach. So far it seems to be working out very well for Nintendo... but also for third parties, whose games are selling MUCH better on Switch than on Wii U... Interestingly, because Wii U had big titles at launch like Mass Effect, Assassins Creed, and more; Switch is heavy in the Wii/SNES/NES style games, which seem to do a lot better on Nintendo consoles than the Mass Effects and Assassins Creed style games. To put it into perspective: Bomberman, Shovel Knight, The Binding of Isaac Afterbirth+, and that sort have been selling about 500K a piece, as opposed to Mass Effect 3, Assassin's Creed 3 and 4 which only sold 30K-100K during the first couple of months on Wii U. Currently the top selling Switch game is Minecraft. Maybe the Switch fanbase is filled with a bunch of retro-hipsters.
I'm looking forward to the sales of Skyrim on Switch, just to see how that stacks up compared to the Wii U western titles. I think it will do a lot better because I think people really want to play this game on the Switch.
My prediction on the monthly flagship release schedule (we already know March to July):
March - Zelda
April - Mario Kart 8 Deluxe
May - Minecraft (Nintendo licensed content)
June - ARMS
July - Splatoon 2
August - Fire Emblem: Warriors
September - Elder Scrolls: Skyrim (I suspect some Nintendo licensed content)
October - Xenoblade Chronicles 2
November - Super Mario Odyssey
December: the rumoured Pokemon Stars (Or some other soon to be announced title)