We can't remove supercruise, how else would we fly around celestial bodies and land on specific places in planets without supercruise?
We could however shorten these ludicrous thumb twiddling travel times, by increasing acceleration and deceleration.
I would support this idea, but only if it comes with increasing risk (Terminus style, anyone still know this old game/simulation?). In Terminus you could theoretically accelerate without any hard limits, but from a certain speed on your ship would increasingly lose structural integrity (by micro particles, so the somewhat tinfoiled lore) - up to the point where your ship would break/explode.
In my book easily the best solution for space games/sims to avoid this popular and completely risk free artificial speed limit.