Aguayo quiero que (1) unos cambios a estos (2) . diana (3) que son buenos y (4) , pero tienen dos problemas. éric sí. los (5) son buenos no son originales, y los que son originales no son (6) . aguayo ¿qué (7)

AGUAYO: Quiero que hagas unos cambios a estos diseños.

DIANA: Creemos que son buenos y originales, pero tienen dos problemas.

ÉRIC: Sí. Los que son buenos no son originales, y los que son originales no son buenos.

AGUAYO: ¿Qué crees?

Explanation:

AGUAYO: I want you to make some changes to these designs.

DIANA: We think they are good and original, but they have two problems.

ÉRIC: Yes. Those that are good are not original, and those that are original are not good.

AGUAYO: What do you think?

ah, so ustedes and nosotros are my 'go-to' if i am using spanish mainly in the states? interesting, but still slightly confusing, haha."

it seems that you are a little confused about subject pronouns. yo=i, tú/usted=you, nosotros=we, ustedes=you(plural), ellos/ellas=they.

in the case of vosotros, it is an informal replacement for "ustedes" in spain. similar to using "you all" in english.

even though it is not generally used in conversation outside of spain, it is used many times in literature. i would suggest having at least some familiarity to that form, at least to recognize what it is.