Although sounds like ichigo full hollow and GG aizen, or at least whack him till he cry,
but in my memory he cannot control it at all
In another words if he turn full hollow he may kill everyone including urahara and his father, lol

Anyway, i cant wait the answer of why suddenly ichigo has this full hollow form

I am looking forward for isshin, urahara and yoruchi to smack open aizen form now...
cause he look not cool in his current form

This question is adi too late

If u watch his improvement since the begiining u would know that although his power is keep growing but he get weaker all the time

At first ichigo with kenpachi without eye patch, no bankai + skill, draw;
ithen, block the dam big phoenix thing, just put the sword behind him, not even a block and destroy that thing;
deal with byakuya, bankai only, able to avoid byakuya bankai and get a draw.
when comparing above to recent,
get bang by grimmjow's fang when he can avoid byakuya bankai and with hollow mask, lol;
get smack by nnoitra who later get owned by kenpachi, in which ichogo suppose to get a draw with kenpachi in the beginning (lose in reasonable way since he got tired after defeat grimmjow)

If u recall back his battle, all his battle after he obtain bankai have to go full which mean must activate his bankai and hollow mask when he had it, somemore most of the time even activate both he also not able to crush his enermy
He was dam fast when dealing with byakuya but after that his shunpo from that time like disappear for no reason because unable to avoid many type of attack that is so much lower level than byakuya bankai

I suddenly felt like going to lose my patience for aizen's power
The main boss most probably will get pawned by the main char in some way
I bet what all the fans waiting for is the way of how ichigo suddenly surpass aizen and pawn him

Anyway ichigo is the only one that is still can fight now
Wonder how he suddenly turn into his full hollow form
And wonder if aizen got a full hollow form too?

Here we go again....

Both say something
Ichigo attack
Aizen fight back
Aizen injure
Looks like ichigo victory
Aizen say:"...think this can hurt me?..."
Aizen fight back
Ichigo injure
Both say something
Ichigo attack
(continue on)

Wonder if aizen can turn into full hollow as well.