when you delete an keyword test from the list of keyword tests it will removed from there - but if you have this test in other keywordtests these will stop with error message that this keyword test i...
Um... that's not exactly practical? Because removing a keyword test reference from another keyword test would STILL mean that other keyword test would fail. The assumption is that the keyword test being referenced has some necessary function that, when it's removed, suddenly things won't be in the same state.
It's like writing an application that uses a class declared in a unit... and then deleting that code unit from the project. Anyplace that class is referenced will suddenly cease to function. So... if I could down-vote an idea, I'd down-vote this one.