Alright well the first one, I manipulate the wind around my opponent and trap him inside it by compresing the sphere to be smaller. The wind inside then starts to injure him by blowing his body to the sides. How much chakra are you absorbing from him? I guess some disadvantages are... I don't think there is. I mean B-ranked fire can beat it etc. Advantages are that you can wrap your fire jutsu in this globe, increasing it's strength. Long ranged is always a good thing. I guess I can trap summonings with this also.
The next jutsu seems fun. You'll channel wind chakra through your arms and release a large whirlwind of wind. Sounds like I can use this in my taijutsu fights. 'wink' 'wink' I don't see any disadvantages with this either from the obvious a-ranked fire weakness etc.
