Steel tapered forks are a bit of a nightmare. If you can get over the issues of cost, weight, ride quality and aesthetics, then it’s all good!
If we made a tapered steerer version of our Stoater fork, the steerer alone would cost more than all the other parts put together.
Weight, a 1.5″ tapered steerer on it’s own (300mm length) will weigh about 450g. Our Stoater 1-1/8″ fork with an uncut steerer weighs 720g. It’s going to be a heavy fork.
A tapered steerer is going to look weird. Skinnyish blades into a 44mm headtube looks odd.
If you can’t live with the look of skinny blades and want a blade that matches and looks proportional to the headtube then you end up with an overbuilt mountainbike fork that won’t ride as well.