my suggestion is a bit weird i know. imagine if every 200 seren spirits you had a chance to spawn an orange one or something that gave a single treasure trail item. ring of fortune or above to access hard clue items. luck of the dwarves to access master and elite tables. thaz all, don't hate, also don't bother pm'ing me, my status is friends only or offline mode usually.
and don't argue! it ain't worth it. just put support or no support basically.