It's true that this year for Nintendo felt odd.
Of course COVID made things slow down , but Nintendo was willing to localize/port games that were considered on the more obscure side , with Panel de Pon , Mario Picross , FE1...
I really hope that 2021 will be as awesome as you predict it to be , Fatman.
I think it will be because the way things have played out it's become apparent that everything was pushed back 4-5 months. November releases are now likely to be April and May releases. This makes sense because, historically, Nintendo's "year" typically starts in late March to mid May when it comes to releasing brand new first party games. I decided to look into it to save you all the trouble and here have been the major first party game releases in late Q1/Q2 since 2011:
2011: 3DS launch, Ocarina of Time 3D
2012: Kid Icarus Uprising, Mario Party 9, Mario Tennis Open
2013: Tomodachi Life, Game and Wario
2014: Mario Kart 8, DK: Tropical Freeze, Kirby: Triple Deluxe
2015: Mario Party 10
2016: Fire Emblem Fates (outside Japan), Star Fox Zero, Kirby Planet Robobot, Twilight Princess HD
2017: Breath of the Wild, Switch launch, Mario Kart 8 Deluxe
2018: Nintendo LABO, Kirby Star Allies
2019: Yoshi's Crafted World, Tetris 99
2020: Animal Crossing New Horizons, Xenoblade DE