This is my issue as well. I'm not a fan of smash, so last year the only first party stuff I bought was the XB2 expansion (very fun) and Pokemon Let's Go (which was charming but incredibly underwhelming). As much as I appreciated the 3rd party output last year (and am excited for what's coming this year), I'm dying to play a great Nintendo game.
I heard good things about Torna as well but the JRPGs and myself officially divorced more than 15 years ago, and our relationship is beyond repairs.
I believe that the octoexpansion was their most remarkable work of 2018, even including smash. And unlike some their other first party releases (looking at you Mario Tennis), it really did not seem undercooked at all. They expanded on Splatoon's concept and made something really interesting with it, to the point that I'm almost more looking forward for the single player than the multiplayer mode of the inevitable Splatoon 3, as I doubt that they'll fix the numerous issues with the latter.
I still have hope for some nice surprises in the second half of the year, but I'm thinking that my switch will be this year, once again, my hybrid indie machine; not bad, mind you, but less than what it could be.