you should make more prototype options... If you want this to be a great app look at some of the features in wix.com or ai2. I think like in ai2 you should use a block editor for anyone who wants to use it because it will open a lot of options. Also' look at all the wix features and see what you can add into the designing of this.
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in wix there is a lot of customation in the "desiner part and in ai2 you have lots of options like programming blocks and timer and lots of other things which should be in the blocks editor.