With halogen lamps like any incandescents, small variation in power leads to huge variation in life. (Near the rated power, not in very dimmed states where the halogen cycle may do some villekulla). So just a little not too noticable dimming may resolve your lamp life problem
Failing other lamp formats, car headlights (H7 etc) are also halogen, fairly good performance and quality for what they are, and i dont think are banned anywhere
They have shorter rated life than "home" halogens, but if the other halogens you can use are of bad quality, a car lamp may outlast them even at full power
Same dimming vs. life consideration applies. You could run the lamps with a plain transformer or a switching power supply. The "metal mesh box" type ones have a small pot to calibrate the voltage, essentially a dimmer for your application
24V (truck) lamps are a little higher power than 12V ones for the same lamp format
With LEDs i have not seen any integrated luminaires that are even remotely acceptable
With screw in lamps there are 2000K-ish filaments (probably ordinary 2700K filaments inside, but the glass has a golden color to it). Those do reduce the blue light content to nearly none, they have fairly pleasant light, but fairly dim
Lamp life : The big names are not really avaliable in my area. I have had mostly good life with Eurolux (a local brand name which you probably dont have there anyway, they are "the better ones of the made in China" sort of lot), but not without some hit and miss too
In one case i have replaced the same lamp in the same socket 4 times in 4 successive days (each one of the first three lasted less than an hour cumulatively), the 4th one (which looks identical) lasted 7 years so far and keeps going...