Can Speak with Animals be substituted by an improved familiar for the valet archetype?

[Grimjackal]

It seems that Speak with Animals of its kind is a required substitute for Deliver Aid under the Valet archetype for familiars. Would it be reasonable to allow an improved familiar that has the ability to speak with animals to lose that instead?

(Such as the Silvanshee Agathion (CN), Cat Sith (CN), Ratling (CE) and Zoog (CN).)

[Great Goblin Water]

Grimjackal wrote:

It seems that Speak with Animals of its kind is a required substitute for Deliver Aid under the Valet archetype for familiars. Would it be reasonable to allow an improved familiar that has the ability to speak with animals to lose that instead?

(Such as the Silvanshee Agathion (CN), Cat Sith (CN), Ratling (CE) and Zoog (CN).)

RAW that doesn't work, but that seems like a reasonable thing to allow IMO.