@katut While there isn't a whole lot of different between "what were your thoughts" and "what were your experiences", there is a difference. The first is framed as asking for opinions while the latter is asking for a summary of impacts.

For the downvoters and for those who voted to close: XTCE is a "Recommended Standard" from the Consultative Committee for pace Data Systems (CCSDS), and the OP did link to the standard.

@planetmaker I rejected your edit. Changing the question to ask a different (albeit related) question is for the author to do if they wish, and other users doing it conflicts with the author's intent

@DavidHammen I downvoted and VTCed because this is an opinion based question, not the XTCE

@ Starship No, it is not. The only "opinion-based' aspecst of the question are "What do you think about it in practice?" and "Looking forward to hearing your thoughts." Just ignore that (or in your mind, replace with a slightly different phrasing) and the question is not opinion-based at all. I upvoted and voted to leave the question open.

@Starship for that reason I left the comment as to the intention of my edit (suggestion), and to show the author of what (at least I) consider the same question albeit without the subjective aspect which did make the original question not suitable for this site. IMHO this phrasing will allow more objective answers to this fundamentally interesting question and which will answer the same question to the OP.

@planetmaker Except its a different (but related) question and your edit would conflict with the author's intent.

@Starship I disagree with that assessment, and so we probably will have to agree to disagree :) IMHO it's the task of more experienced users to guide new ones to how things work here - and rephrasing questions to become more suitable is part of this.

@DavidHammen "How does it stack up" is opinion based, so is difficult/ease of adoption, pitfalls, etc.

I updated the question. I hope its ok now.

@Starship actually, in Stack Exchange there's no "opinion-based question" issue. The close reason is "This question is likely to be answered with opinions rather than facts and citations." We don't need to be so picky about the exact phrasing of the question - as long as there's a reasonable chance someone might come along and leave an answer that is based in facts and/or citations, we can just leave the question alone and wait. With a low question rate and an excellent and responsive community, I don't see any reason to quickly block answer posts by closing the quesiton.

@uhoh A opinion-based question is one that will be answered with opinions, hence the close reason.

@Starship I don't order "mouth-based soup" at a restaurant when I want soup that will be eaten by mouth.

@uhoh Yes, because its assumed all soup will be eaten by mouth. If someone offered you soup you needed to eat with your nose, I'd imagine you'd decline :) Similarly, here it is assumed all questions will conform to certain rules, including not being opinion-based

@Starship Stack Exchange has no such rules. We have the Terms of Service for user behavior, but no "rulebook" (though there is some guidance in the help menu). Close voting is a particular site's community exercising it's judgement, one question at a time. Therefore, close voting itself is opinion-based.

@uhoh Close voting is somewhat subjective, but the goal is to make it as objective as possible. And (outside of community specific reasons) close voting is the same everywhere

@Starship Trying to guess if any other community member of a community might be aware of facts or citations we aren't in order to predict if any other community member might be able to write a fact or citation/based answer is 100% subjective. Some folks apply the "if I can't think of any, then nobody else could possibly" insta-close algorithm while others apply the "let's wait a few days to see if anybody can" algorithm. In a few cases it's so clear that it comes close to objectivity (e.g. "Best X?" questions)

@uhoh If you are closing a question just because you can't answer it...that's very bad...I sincerely hope no one does that. Closing questions is for questions which can't possiblly be answered by anyone (ex. didn't ask a question, has 100 questions in 1, unclear what asker wants), are off-topic (ex. whats 1+1?), is totally subjective (there is no right or wrong answer, totally opinion ex. what's the best rocket?), or is a duplicate...and that's more or less it

...but the reason it usually takes 5 votes here (or 3 votes on some other sites) is because it's not objective. And close votes often "decay" over time. The algorithm counts the close votes and the "stay open" votes and sometimes zeros-out those subjective close votes over a period of time.

@uhoh It takes multiple votes because sometimes people are wrong. But mods can close with 1 vote, as can gold badgers with dupes, because we assume they'll be correct. CVs age away so that a highly viewed question which only 1 in 1000 users actually think should be closed is closed over years because every year 1 out of thousands of visitors thinks it should be closed. And leave open votes don't remove CVs (they can remove items from the queue, but that because its assumed that if a lot of people agree it should be left open with few people thinking is should be closed, the closer was wrong)