In about 10 years, it will be possible to run a cell lysate sample through a mass spec machine and get what a present-day scientist would call a pretty good picture of everything going on at the proteomic/metabolomic level, in perhaps ~5 hours.

But in that time we will have probably discovered several currently-unappreciated, biologically relevant biochemical mechanisms which we can’t efficiently probe like this. And also it will be considered next to useless because it doesn’t work on single-cell samples. :)