I think a great addition would be the possibility to save (and name) filter settings and be able to apply them with a simple button click (“quick filter”).
For e.g. I often switch between HSO targets (via type) + Moon Distance for Ha or OII and LRGB Targetd (via different types) + Moon Distance for LRGB.
Via quick filters, switching between those filters would save lots of times and reduce the possibility of input errors.