If Osmium wasn't so rare or expensive, what could be some of it's uses?

Osmium (from Greek ὀσμή osme, "smell") is a chemical element with the symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores.

Osmium has only a few uses. It is used to produce very hard alloys for fountain pen tips, instrument pivots, needles and electrical contacts. It is also used in the chemical industry as a catalyst.

With its high melting point (3000 C) it is used for high temp alloys. No doubt if it were not so rare we would seem more alloys that are more suited to high temperature operations.