It is very easy to use - just drag & drop between two versions of any file or folder! The UI could be more modernized (like with native MS Office apps).
And I wish it was possible to open 2 different version side by side without having both opened at once like VS Code does now that they have multiple panes support. This feature would make me switch from VC completely if BC ever added this functionality :) If there's something wrong with one specific diff tool out here please mention what exactly about its features are missing/broken so we know whether such comparison software should stay within our team as well ;) We do code reviews quite often across various branches / revisions of source codes but sometimes some small change gets missed due to lack of time etc., which makes us miss important details while reviewing them before merging into master branch. With bc all these issues get resolved because each revision has detailed history attached alongwith every.