One nice innovation of POE2 is the “per skill stats calculation flyout”, that shows you all the relevant stats calculated by a particular skill in the current passive-points and skill-points configuration.
This would be absolutely excellent in Last Epoch, especially because of how many skill trees involve conversation of one stat into another, and then options to convert damage forms. These skill specific changes don’t end up in the character-info global-stats tabs, because they are specific to a skill.
One simple way to do this in the UI would be to make a 5th tab on the Character SHeet, “Skills”, and in the skills tab the left side would have a vertical list of your available class skills, with the specced ones highlighted… The right side would show the “skill related resultant stats calculations” that are currently true for that skill. Then, somewhere on the skill itself, there would be a button for “detailed stats” which would close the skills & specializations window and take you directly to the per-skill details on character panel.
For example, speccing chthonic fissure with Mantle of Flames would show an “Ignite Chance Per Second”, and then further speccing it for “Blood Gulch” would change this to “Bleed Chance Per Second”…
An alternatve or complimentary UI would be for the skill-tree-page skill tooltip “more information” to show the relevant detailed stat, in this case, the Mantle of Flames tooltip “more information” mode could show “Ignite Chance Per Second 254%” or “Bleed Chance Per Second 254%” depending on the situation.