Well, I've been shooting 1911s for a long time and none of my Pony Pistols have the FP Block.
Here is a plain text page of LE drop testing of pistols...but, I don't have Adobe on my lappertop so you'll need to get the additional pages yourself. This text page explains the testing (and Kimber was tested) but, the test results are not on the page.
NLECTC Tests Autoloading Pistols for Law Enforcement Use (January 2000)
If you install a heavier recoil spring then you should install the mated fp spring that is included with it. That is prudent.
I believe that the purpose of the Titanium firing pin - as well as the (yuk) Titanium hammers - Titanium hammer strut - and the Titanium mainspring cap are to quicken up the lock time and not to prevent any drop detonation.
It makes sense to add a Titanium hammer strut and mainspring cap but, I would never go with anything but a steel firing pin.