compound word study

This might be a lot to ask, or it could be very easy to implement depending on how the app was created. I was wondering if a new mode could be added for compound word study.
Nothing major — imagine that after pressing the "Study" button, you have the classic single-kanji study option, plus a second option for compound words.

This second option would work just like the first one, but instead of a single character slot, there would be multiple slots for a specific word. For example, if the question is "警察":

• The app says the word aloud and shows its meaning, just like usual.

• Two character slots would appear instead of one.

• You would be expected to write both kanji, one after the other, from memory into the two slots.

A possible feature could be to only include compounds made up of kanji you've already learned in the normal mode. So you wouldn't see "警察" unless you had already studied both "警" and "察" individually. The more kanji you learn, the more compound words would become available.

I imagined this as an add-on to complement the main study. For example, after reaching "Tensai" or "Senpai" level and above with a new kanji, related compounds could become available in the second mode, alongside other kanji at the same level.

Possible challenges would include screen space limitations or difficulties in implementation depending on how the app was originally designed.