Close. One particle mistake. Change the 「が」 to another one.

Haha, this is exactly why I don't use pronouns in this construction. My best guess is to change it to に, but holy hell I have no idea.

Then, in descending order of "guess":
の?
を?
ピョコ?

Correct. It is ALWAYS 「に」 when saying "Someone wants another to do something."

Thank you for both of those explanations--and for that amelioration at the end.

Regarding the '"you and "me"' thing, another reason why it wouldn't be what I said is that you used がほしい　rather than ~たい。
So, "なんといたいか" or "なんと言いたいか" might translate to "what do I want to say", no?

たい is used to talk about your own desire to do something
たがる is used to talk about another person's desire to do something
てほしい is used to talk a person's desire for another person to do something

ピザを食べたい = i want to eat pizza
ピザを食べたがっている = he wants to eat pizza
ピザを食べてほしい = i want you to eat pizza

Right, thanks.

Thanks a lot, this will help immensely.