I've thought about this for some time and recently just went for it - shortening the firing pin fall for a SR Mauser. I'm into 93,94,95,96 Mausers to the tune of around forty of them, 2/3rds of which were bare actions collected over the last forty years or so. There isn't anything new about shortening and a lot of Swedish target rifles have done so by grinding about a 1/4" off the sear engagement. I wanted more, so I removed the engagement entirely and made a piece that I silver braised on to make the fall length 1/2" and copied the profile of a '98. BUT! obviously there is a problem in that the original trigger can't be used because of the lock-out function: it fires but the action can't be opened. No problem, I used a '98 trigger group and it works better than I expected. BUT! now there is no now lock-out, the pin will fall at any point of load when the trigger is pulled. Is this to be worried about?

Well, you have defeated the safety feature that prevents firing pin fall before the bolt is fully locked.
And on the 98, they went to the two front lugs on the firing pin. And of course, the big cocking cam.
But, the first 98s, didn't have that feature.
But, there is still a little FP retracting cam on the 93 bolt so it won't fire unless fully locked. As long as your new cocking piece nose/cam is made to engage it correctly; check that. Otherwise, not good.
I like the 93 series, and I use them for lots of things; actually I like the 91s a lot. 450 Bushmaster and 35 Rem work well in that. But I don't care if the firing pin fall is an inch.

dp, I do understand that but didn't relay it clearly. I do have perfect engagement with the standard two stage pull that does NOT override at any stage of cocking using a pry to lift the bolt at various points along the way.

Looking at it carefully, I MAY be able to massage the bolt so it's still locked until the lugs engage with the original 93 trigger. I'll save that for a day when I'm bored and I'm certain that it would be different every single time.

As said, it works really well and the fall distance of 1/2" feels like another animal in use. With the stock 98 trigger, 1/2" is pretty much the limit in terms of fall. This was an experiment using a junk cocking piece and Home Depot 1/4" key stock. If it proves, I'll have some water-jetted out of something like 01 as I have a friend that has one.

Also, I realized today that a Timney has the same problem, maybe even more so. Why didn't I think about that?

IMO, the 93, 94 (Brazil) and 95's without thumb notch can be refined into the smoothest of the mauser actions.