As I am confused again and again when looking for tremolo - because I would never expect finding it under the repeats panel - I suggest to re-think the location. Tremolo is a kind of variation (modulation) of a sound and so it seems more appropriate at the ornaments-tab. The repeats and endings belong imo to bars and barlines. If You do as proposed the right panel would have one item less and it would benefit in terms of clarity.