Well, most 1911's are series 70; so they don't have a firing pin block... Personally I like that feature, so I won't be changing mine.
You can remove it, dry fire it and see if it makes a difference; it might make the trigger a little lighter. Now I'm a little curious myself...might have to give it a try. Probably won't be much that spring is pretty light/weak.
got rid of the 80 series safety and had my gunsmith put in fabricated spacer from 4140 steel fitted and polished it. It works fine and I felt the trigger moving smoothly after taking out all those moving parts. Less mechanical parts to worry about failing .
I had to remove my block today. I thought I had caught the spring, but my old eyes missed it and away it went. I don't carry in condition 2 anyway, so I'm not worried about that. What I am worried about is the lever mechanism flopping around in the breeze. Any chance that could get messed up? I don't plan on using my sidearm (we never do, do we...) until I can get to the 'smith and get a new spring. Any issues shooting with only the block and spring missing?