The search feature ("/") is now implemented for the main view, and the "before selection" and "after selection" insert features for checklists (p/P, o/O) have also been implemented as suggested by ototo. Let's see if there is anything else I could add - otherwise a new release will be rolled soon for you to test
A way to rearrange items (if not yet implemented) would be good. Something like: dd, some j, some k, then p
Yes, that will work for the checklist. It does not yet work for the node list, but the node list already has a context menu (longpress) with which you can move items up and down. It's a bit more tedious, but the feature is there if you need it.
Also, MaePadWeb (a Web UI running directly on the device for editing MaePad databases from your computer) is currently in the works and should be available soon: