Pretty decent, but not very userfriendly to work with.
Few things to improve UX could be Transition rename auto update. The ability to double click on any transition table in the list to directly update it instead of having to re-enter it again to set it again. The ability to search on names anywhere in the name - and not just starting with the name. So if a scene is called "Scene B" you should be able to type B and have it show up, not just "Scene".