I mean the wording is solid. Taking it from the Double Tributers its pretty easy to do.
"This card can be treated as 2 Tributes for the Tribute Summon of a [...] monster."
"This card can be treated as 2
Tributes materials for the Tribute Xyz Summon of a [...] Xyz mMonster."
"This card can be treated as 2 materials for the Xyz Summon of a [...] Xyz Monster."
if you REALLY want to, you can specify level on it.
"This card can be treated as 2 Level x materials for the Xyz Summon of a (you could also add Rank here) [...] Xyz Monster."
I've done crazier things before. Unless there's something in particular stopping this from working or something in the archetype's balance that would rather me not have the effect I'd rather keep it, since this archetype is my exploration of Xyz Monsters in Link Format. This is a interesting part of Xyz Monsters as well, and I'd rather not be restricted by Konami's lack of confidence in the mechanic. If they can make Xyz Monsters that only need 1 material then I should be able to make monsters that can be treated as 2 materials.