Not all these "short sliders" are mapped with the intention that you should hold them though...In that case why not just make them circles without tails?
When I map kicksliders, I prefer to think of them as just circles with a tail attached. They are very useful for creating short breaks in between stream sections of a map if you want to keep intensity without making the map too dense with 32+note streams.
That's exactly the situation where they shouldn't be used! Sliders are supposed to be held by definition