Highlights for me:
3DS:
-Luigis Mansion 3DS: Always wanted to play through the original since I own it on GC but never got around to it, this will be a great way of doing so.
-Warioware Gold: This isn't quite the return I was expecting... I think the creator was trying to do the same thing that he did with Rhythm Heaven Megamix and just offer a "best of" selection. So in the case of Warioware you'll get a selection of some of the best microgames from the GBA and DS titles, pretty cool if you ask me. The new redesigns strike me as a bit odd though.
I'm a bit weirded out that we're already getting another Mario and Luigi game. I feel like these games have seriously dropped in quality lately and they're just pumping these out like it's nothing.
Switch:
-Travis Strikes Again: No More Heroes: At first, I wasn't really feeling it with the gameplay we were being shown. It looked... stiff, Travis's running animation looked a bit off and the top down arcade style was a bit off-putting to me, being such a huge fan of the original NMH games. But... I think it's grown on me, I actually think this game looks legitimately addictive and fun. It isn't quite the NMH sequel I wanted but it still looks like loads of fun. Here's hoping we get No More Heroes 3 in the future.
-Third Party support (Dark Souls amiibo, South Park Fractured but Whole, etc.): I don't plan on buying these since I usually get them on PC or PS4, but I think it's really awesome that these games are coming to Switch, I've noticed a really big effort from Nintendo lately to really get these third parties to Switch, it's truly great.
-Crash Bandicoot N Sane Trilogy: I've played through the original Crash games at least like 5 times, and I beat N Sane Trilogy once on PS4, 100 percent completion, now I gotta do it again? Jokes aside, I think this is fantastic. I was actually one of the naysayers thinking that there was no way this could come to Switch due to the fact PS4 struggled to even managed 30 with it. I'm really happy for Crash fans who want to take this game on the go. In addition, a Steam release was also announced for it, so it's great that everyone on every platform can experience these classics now.
-Super Smash Bros: I still have zero idea whether this is a port, or a brand new game entirely. My prediction is it's gonna be a new a title that uses the Smash 4 engine to save time and resources. The new logo and character design for Link just really make me think this isn't a simple port, it's definitely gonna be something much more, or something else new entirely.