so given the leaps in kotlin scripting.. i think it would be possible (once a few more bugs are fixed) to make a notebook for kotlin note that i know barely anything about notebooks but the main point is to load datasets, transform them over multiple steps and easily visualize data right ?

There are several already. In my opinion, the best is http://beakerx.com. It features not only the notebook kernel, but also visualization for JVM, other jvm languages and transfering data from JVM to python and back. It needs some help to migrate to KEEP-75 right now: https://github.com/twosigma/beakerx/issues/7898

seems like there is no need for another one then...

Beakerx needs some tinkering. Also it would be good to befriend it with data2viz. Feel free to contribute.