On one hand, this seems like welcome news for many of us. Who doesn't miss MagSafe? A lot of the previous years was like someone at Apple read Calvino's Six Memos and took the notes on "lightness" a little bit too far. On the other hand, one wonders if we'll have to replace all the sleeves and bags that have been made with the previous dimensions in mind. Hopefully not. Even the new 16-inch MacBook Pro fits in sleeve…
The cables fray and the MagSafe tips wear out, that means buying an entire new charger (or soldering on a donor cable), I'm on my 5th or 6th. The surfaces get dirty, and because they just butt up (rather than sliding) they become high resistance and heat up.
If MagSafe 2021 doesn't fuse the cable to the charger brick, then I might consider it. The fickle electrical connection is inherent to the design though.