A solution to slider leniency would be to have both lazer-style sliders and old-style sliders, old-style sliders would function how sliders in osu!stable work, and all old maps (before the switch to osu!lazer) would use old-style sliders. This would also fix readability issues of some other suggestions as old sliders would look like the osu!stable sliders (mostly opaque) and osu!lazer style ones would look how they do now (Transparent in the centre).
This could also be used as a mapping feature (you could have normal and technical sliders in the same map right after each other and not have many readability issues as they'd look different).
One problem would be that if this is used as a mapping feature it could be abused to make overly-easy maps.
It would look something like this:
This could also be used as a mapping feature (you could have normal and technical sliders in the same map right after each other and not have many readability issues as they'd look different).
One problem would be that if this is used as a mapping feature it could be abused to make overly-easy maps.
It would look something like this: