So yeah the first technique is pretty powerful. As you said its just the more powerful version of the B-Rank variant which allows you to block A-Rank techniques. So its important to keep in mind with this technique the size of it. You need space to use this technique as you summon three enormous gates essentially. So while you can block A-Rank and below techniques with this make sure that you keep in mind the size and shape of these gates and the size and shape of the incoming technique. Also it is probably only useful to block projectiles as streams will be able to just continue easily as the user can just keep maintaining them.
So the next technique is quite cool. Scorps used it on me when I was am still a noob ;--;. Anyways essentially you use chakra to bend light around you erasing scent and shadow. This can be used on any terrain and can be used defensively, offensively, and however the user really sees fit making it an incredible technique. Dojutsu can pick it up as can sensors (not for the Mu variant) but yeah. Its an incredible technique. Its important to remember that you're still there. Just you can't be seen.
So the next technique is quite cool. Scorps used it on me when I was am still a noob ;--;. Anyways essentially you use chakra to bend light around you erasing scent and shadow. This can be used on any terrain and can be used defensively, offensively, and however the user really sees fit making it an incredible technique. Dojutsu can pick it up as can sensors (not for the Mu variant) but yeah. Its an incredible technique. Its important to remember that you're still there. Just you can't be seen.