Lol why would you think I would jump it?
I don't know of anyone who has done this, so you would be headed into the unknown. Assuming size for size replacement the titanium should be substantially stronger than most steel (it is alloy dependent to some degree), if the old bolts are stainless the titanium bolts would be 4-5 times the strength again depending on alloy.
Galvanic corrosion with titanium gets pretty complicated because while titanium is at the top of the galvanic chart (so the keel would be the anode) titanium also creates a ceramic film that makes it highly resistant to galvanic circuitry, which is why stainless-titanium materials are allowed for human implantation while stainless-stainless materials aren't.
I talked with MARS keels about this and they were fine with titanium keel bolts, but don't spec anything, it would be up to the NA to make the design changes.
As for cost. You would be looking at about 50% more than stainless for the bolts! but of course the labor and other costs are the same. So the project cost probably isn't effected much.
Btw. I no longer work for a titanium company, I got a job offer to go back into legal work I couldn't pass up, but still very much believe it is the way forward as prices are now competitive with 316L in many applications. And titanium prices are dropping quickly while other metals are getting more expensive.