I've been using LumaFusion as my go-to video editor on my phone for about half a year. And throughout all my days, weeks, months of usage, I have to say that this is the best video editor out of all the other ones on the App Store. I also like how it is constantly updated to provide a flow of new features to assist in making video editing easier and more advanced.
What I would like to see is a pitch modifier for clips. For example, you can change the pitch of the audio on a clip with a slider, either up or down. This would be useful. Another useful idea I think should be added is the option to select multiple clips in the timeline and move them around, modify them, and trim them. Sometimes I find that having to put the same effect on 3 different clips is a little time consuming and unintuitive, but that's all. Hopefully you will be able to add these features soon. Thanks