User blog comment:Uraharattack/King and his Haki/@comment-24850639-20190124222157/@comment-2600:1702:3C50:A6E0:B07D:C6DF:F1E8:77A7-20190125070140

There is much that we still do not know about haki. It is reasonable to assume that it has abilities which we have not seen yet considering that Katakuri already proved that observation allows one to see a bit into the future which is an ability that those with lesser strength in their observation haki seem to lack. Still we can agree that ideally Luffy and his crew members who have haki at this point should work on improving their haki and other skills before they really get to the conflict of whichever Yonko they will square off against in this arc. There are many theories, but I think one thing that we can agree on is that haki can be improved and it must be improved if they are to face the Yonko and the admirals which is inevitable at this point. We also know that haki can be overused, but if I may give a theory, it seems that Luffy uses more haki in gear 4 then he does in his other gears. If he could improve his armament haki to allow him to withstand sharp objects in his base form which he stated he couldn't in Fishman Island then potentially speaking he could improve the strength and length of usage in gear 4. Just a theory mind you. As far as the Katakuri fight, I think that it pushed Luffy in more ways than one to improve and hopefully he will put what he has learned to good use. I am excited to see what happens next. Wano is getting very complicated and I am not sure I can even guess what will happen next. All of you have excellent impute. I enjoy these conversations.