It would be really useful for harder texts and for beginners to implement a sentence mode similar to what is included in Lingq.
You could go through the sentences of a text (maybe in a tab in the sidebar?) with automatic read-aloud and translation of the entire sentence.
These two options could be turned off independently if someone prefers that.
Read-aloud in sentence mode could use the voice used in Speaking mode. That would be awesome.
Sentence mode could be restricted to Premium members.