I created this test. I don't think tests are good for anything other than helping you determine your own type, according to your own subjective self. This is to say, the results you get might not reflect reality, they might not align with how other people perceive you, friends, family, people online, for all practical purposes, these tests are useless.
If you know the slightest bit about MBTI, even if you can't explain your knowledge or communicate it in a way other people agree with, you can intuitively guide your way to whatever results you want with these as well, mine being no exception, really.
I think a better way forward would be to create a shorter version, and have as many friends and family members and people online take it "for you" as well, this would give you an idea of how other people perceive you, that you could combine with how you perceive yourself.
You would find, I imagine, that your best friend sees you a little differently to your mum, to your dad, to someone that you only know through social media or internet forums, to friends that aren't your closest friend, to people you only know through certain shared interests/hobbies etc.
Maybe there is value in how you perceive yourself, but there's no real point taking an online test to determine this, you could just read type descriptors and pick the one that fits you the best - you can easily sway any online test to produce whatever results you want anyway, so what's the point.