Hello. I personally think you have to do something about that gui.
Kdenlive would've been so much better if it wasn't for that very inofficiant gui.
Because the features, functionality and the editing effects are there.
Please read this post here explaining exactly why this is so important and also image examples with ideas on how you can improve it:
Quick and easy navigation is key when it comes to video editing.
And when the editing requires a lot of multitasking, fast editing with multiple video sources such as in this example, these long lists of effects can be very frustrating and make the ob take forever.