Consider that you get almost the full range of these (rumored, at this point) fast L primes with an f/4 aperture, L-series build and fast focusing for probably less than what just one of them will cost, by buying the RF 14-35/4L IS.
The L-series, in Canon’s philosophy, is about extremes. The goalposts have moved as technology improves, and what was once difficult becomes easier to achieve. But I believe that L-series lenses will always try to push the optical envelope (and the wallet). Slow L-series primes in the wide to short tele range (where there are already multiple L zoom lenses with slow apertures) aren’t at all likely.
