kitty. The ssh kitten is enough reason to use it. I work ob a lot of different systems that require OTP. Using the ssh kitten I can type the OTP once and can spawn new terminals that ssh and cd to the remote direvtory without logging in again. Obviosly the tabs and window panes are are a must too. There’s tons of other useful features that I like, like using hints to select nunbers, filenames, urls, etc in the terminal output.
The amount of CPU time compiling code is usually negligible compared to CPU time at runtime. Your comparison only really works if you are comparing against something like Rust, where less bugs are introduced due to certain guarantees by the language.
Regarding “language constructs” it really depends on what you mean. For example using numpy in python is kind of cheating because numpy is implemented in C. However using something like the algorithm libraries in Rust woulf be considered fair game since they are likely written in Rust itself.