I would rather see Poatan at 205 to run it back with Ank next.
But if he were to leave behind the LHW division then I'd watch Pereira vs any HW. In all honesty I think there's a good chance of Pereira getting snoozed at HW but fuck it would be interesting to see what he would do there.
Aspinall vs Pereira would be huge even with him losing the belt in his last fight. With that being said tho, Aspinall is a nightmare matchup for Poatan but if he were to pull off a win against Tom the UFC/MMA world would go nuts having Pereira be the HW champ & being a champ in 3 different weight classes.
I think anyone would much rather pay to see Pereira vs Aspinall compared to Aspinall vs Gane, Lewis, or Almeida/Volkov.