Let's take the word 'gambar'. I can say "Lina sedang menggambar", no object, and it doesn't sound strange. I can also say "Lina sedang menggambar bunga" and be correct. However, I can not say "Lina sedang menggambari" or "Lina sedang menggambarkan" without any object.
Perhaps I should say that me- words are intransitives or optional transitives.
To add: I think we often avoid using me-i and me-kan except when we need to specifically point the object as direct or indirect. It's perfectly correct to say "Alex melukiskan pemandangan", but in practice I would often say "Alex melukis pemandangan" because people paint a vista on something, we don't generally paint on a vista. As such, the -kan suffix becomes redundant.