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There's just too much lever movement before braking force starts. Seemingly not enough fluid in the system? Thanks for the advice on the piston pushing trick.
I should add that I have already repaired a leaky reservoir in the lever, and am pretty happy that there are no remaining leaks.
Ndeipi-
Did you use a bleed block and then put new pads in? If you bleed the brake with the pistons retracted and then put in worn pads, you will have too much space between the pads. Take the wheel out, squeeze the levers 2-3 times and put the wheel back in
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If the brakes are spongy, it was an issue my (previous) team encountered since the R7000 hydros came out. I recall one new pair that needed to be swapped then burped/bled; 45 years of shop mechanic experience between 3 people and none of us could get damn brake to feel crisp.
chiroshi
Leshaches
If it's pulling to the bars even after a firm bleed, you've got a leak somewhere. I never bother with syringes for Shimano brakes, just using the funnel and tapping the caliper and hoses is usually enough to dislodge any bubbles lurking. Pushing the pistons back in with the system open also seems to get rid of anything trapped behind the piston.