GBF is a love letter to the franchise and to the gunpla subculture. Its animation quality is high, the characters are fun, and Easter eggs are fun to look out for - including more than one where characters who met unhappy fates in their original series seem to be living happily in "our" world. Highly recommended.
The Build Divers series is not very good, but I still recommend it to people who have some time to spare, because Re:Rise retroactively makes it so satisfying. Re:Rise itself is deceptively sophisticated, and touches on some mature themes that even most serious Gundam series don't get to.
Hathaway honestly blew me away the first time I saw it. One of the few movies I've watched 3-4 times now. It's exactly like you say, you can really _feel_ the weight and scale of mobile suits. It's honestly a fantastic start to this new era of UC.
Also lol @ kshatriya being called bell pepper. It's probably my favorite non-gundam mobile suit. I wish they'd make an MG kit for it despite how massive it is.
Watched almost all of them except igloo/build fighter type
Hathaway had a great fight sequence where you felt the scale of Gundam and the violence/heat
the soundfx tooo ahhhh
https://youtu.be/oiiIkSuiios?si=ylHdAqVnE2pPeSKv&t=202
Thunderbolt has great graphics too and the jazz
And unicorn the bell pepper gundam