In trying to use minimap with large org-mode documents, I noticed the following issues:

1. Nothing happens when minimap is first enabled. The status bar claims that is enabled, but nothing changes visibly. Maybe an error message instead, would be more helpful? This can be resolved by manually enabling for text-mode per Broken with emacs 25..1 #14:

(setq minimap-major-modes '(prog-mode text-mode))

2. Long lines are not wrapped, as they are in org mode, which makes it hard to associate with the main buffer.
3. Line height is too big. It seems to match the line height for the corresponding lines in the main buffer.

I have a workaround for for the first item. Do you have any suggestions for the other two?

Thanks!