It's nice to be able to look at one protein, but life is driven by the interactions between proteins, so it's really essential to be able to see multiple proteins at a time to understand these interactions.
There's always something that an engineer can do to make microscopes better.
The eventual goal is to marry all of my work together to make a high-speed, high-resolution, low-impact tool that can look deep inside biological systems.
I hate driving a bandwagon.
Honestly, I feel you are poisoned if you read too much of the scientific literature because it makes you start thinking like other people. You're better off having a vague sense of what's going on and making your own way.