While the new sliders could be smart they are also annoying when used on some filters like Gaussian Blur when a wide range of variation is allowed (this is the case for some filters also suited for high resolution images like for example the new custom filter "Drawing").

The problem is when you try to click on numerical values because then often the slider  instantly increase up to the highest value (like if you drag it to this value) instead of giving you precise control on the numerics. And in these cases often if you type Ctrl+Z before the filter is completely applied Inkscape crashes.

It make working with some nice filters somewhat hasardous and I am sure discouraging for the beginners in this area.

ivan