If you're using a 2015 Macbook Pro in 2024 (like I am) I bet you'd be HAPPY with a new laptop that's the exact same size, weight, and EVERYTHING, with the internals being updated to the M3, right? This was the ultimate machine as far as serviceability, build, lighted apple in the lid, keyboard, ports, Mag Safe.... if Apple made a limited run of these with new internals, I bet they would be the most popular thing EVER.
The 2015 MacBook Pro is still, in my humble opinion, the best MacBook Apple has ever made. It was the peak of design, form, and function. The battery life wasn't great but man what a machine.