Guildpact Card Wordings

Yesterday the FAQ for the upcoming Magic expansion Guildpact was released. I had a bit of time today and I came across two card wording that I don’t like:

1. 1. The FAQ entry for Goblin Flectomancer says:
      

      Goblin Flectomancer

      {U}{R}{R}

      Creature — Goblin Wizard

      2/2

      Sacrifice Goblin Flectomancer: You may change the targets of target instant or sorcery spell.

      • The ability can target any instant or sorcery spell, even if it has no targets.
      • If the spell has multiple targets, you may either change all the targets or none of them. Each target is treated individually, and must be changed to a different legal target. For example, Seeds of Strength targeting Atog (target #1), the same Atog (target #2), and Scryb Sprites (target #3) can be changed so it targets the same Scryb Sprites (target #1), Eager Cadet (target #2), and Alpha Myr (target #3). If changing one of the targets would be impossible, then you can’t change any of the others.
      • If a spell has a variable number of targets (such as Electrolyze), the number of targets chosen can’t be changed.

      While I think that the FAQ is in fact correct and consistent with other rulings, I wonder how I should explain to players that they have to change all targets if they choose to change one. It seems very unintuitive to me. Why couldn’t it just have been worded “You may change any of the targets …” or something like that?

   2. The FAQ says this about Predatory Focus:
      

      Predatory Focus

      {3}{G}{G}

      Sorcery

      You may have creatures you control deal their combat damage to defending player this turn as though they weren’t blocked.

      • When Predatory Focus resolves, you choose whether to use its effect or not. If you choose to use it, all your creatures will deal their combat damage to the defending player this turn whether or not they become blocked. You can’t have any of them deal combat damage to creatures that block them. If you choose not to use its effect, nothing happens.

From the way the card is worded it sounds as though you can choose which creatures deal what damage. Why “may”? I think “Creatures you control deal their combat damage to defending player this turn as though they weren’t blocked.” is much clearer and works nearly the same way the current wording does. Why whould you choose to play this if you then choose not deal damage to the player?