@MacMeaties that's like saying onee-chan, onee-san, onee-sama, aneki, anego, onee... are all just big sis. The meaning is conveyed, but you lost something in the situational PoV too.
A keikaku is straight up translated to plan since it's a word and shouldn't be otherwise beside for the meme.
I'm not saying it should never be translated with some equivalent in english, just that TL can choose to do it like this for a reason