One of favorite classic GameCube since 2004/2005 school year as kid. Around 20 year later, I was definitely happy that we got Switch remake, and oh course I glad I able glad play this classic game on the go especially if I not home. And I purchased original GameCube version on October ago, and man. I was surprised that Switch remake had lot of changes from GameCube.
Original GC- Only 4 warp in games, audience used to had screaming or cheering sound in battle, Mario only facing right or left hammer attack when he in overworld, oh course hammer used to go through NPCs and even partners,
Partners doesn't had expression since always has neutral expression mostly cutscenes. Oh course, NPC and even partners only facing right or left. Speaking of Chapter 4 after beating Doopliss. Shadow Mario still have voice even though his body stolen by Doopliss.
Oh course you had to pause the menu to switching partners. You can to sell some badges for extra coins. Etc...
Oh course, you have to be lucky enough guessing the rule on Glitzville arena fight rules on Chapter 3 on original GameCube version.
Switch on the other hand- Some dialogue was different, there good add on music that partners never had their own theme on original GameCube. Oh course, the credit had new update that it's literally stage play style credits. There some great changes to make more good improvements of classic masterpiece game. Partners ring is useful, the warp pipes had 7 warp pipes now, it's lots helpful for me, especially looking for the white bomb omb NPC in Chapter 7.
The music soundtrack are lots different, and good news for GameCube fan, you can use default GameCube version by Nostalgia tune badges in Prologue, but the music still having default music like cutscenes for example.
Also, I like it how Chapter 3 adding a useful hint text that the rule for Glitzville arena fight rules that help some people who had no what to do. And oh course, it's good for Nintendo adding hint to help new generation gamer what to do next if they stuck in chapters. So many changes.
There awesome neat change on Switch version of TTYD, it was good for Nintendo adding NPC and partners reacting when they got hit by hammer. And oh course, I love it how any Mario's partners got their different angry expression or shocked expression or sad expression to make more sense. Nintendo did amazing job improving those 2004 masterpiece GameCube game.