Hey there,
subl is absolutely the best when you quickly need to open and edit a huge file. You cannot, however, do that when the file only has 1 line. Do you think it might be possible to get that fixed at some point? Opening a 1 line 1GB file on a modern machine brings subl to a complete halt and regex editing is sheer impossible.
Hi! I'm struggling with the same problems (Debugging huge ASM.js files).
The best modern, non-vim editor to handle such files I've found is Cuda Text: http://uvviewsoft.com/cudatext/
Absolutely top tier lightweight code editor for special tasks.