First: Maybe you didn't want it to come across rude, but it did, like some people pointed out here. Even the first answer to your question was very straight forward and totally helpful, explained basically everything you need to know, and your answer was not very nice. Just take it as it is and lets move forward.
So you just need a notepad-addon to write down items you want to get? There are tons of such addons
And your last part: It seems you still dont get what's the point of simming yourself for "BiS" Items. Of course we all sim our characters to get the best possible item-upgrades
for the current status of our chars. Thats exactly the point. Every single item you get that is supposed to be your "BIS" for the current character can swap everything around and suddenly items that were BIS until then become non-bis items, because your stat priotities change, hardcaps are reached/lost, trait-dependencies change,...and again: There are TOTALLY DIFFERENT "BiS"-Lists for every type of content, and even sub-content, and raw output is also not the way to go sometimes. You can't even take the results from raidbots or simcraft 100% for granted and "be the best you can be", you have to be thoughtful on every decision and hold it against the content you're going to play.
And thats why an addon that decides what's best for you makes no sense because nobody besides you can know.
And just for having an overview of items you aim to get you can just track them via a notepad addon, or the good old pen&paper.