Notes

MID to B strat. 1 player with AWP or Scout, 3 smokes, at least 2 flashbangs and optional molotovs needed.

Preparation:
One player stays T spawn with AWP to count the CTs crossing to B and to cover Long A while the other four players prepare to execute. During execute this player should move into top of mid (if viable) and cover short A from there, but this does not need to be strictly followed. This player should not have the bomb.
Two players head B tunnels. One of them smokes off entrance to B and guards in case of push. The other player moves into lower tunnels and arrives at lower mid.
The last two players head into mid (not through suicide) from T spawn. One of them smokes off short A and guards it in case of CT push while the second player executes CT spawn smoke from x-box. Once the player from lower tunnels arrives, one player flashes area right outside mid double doors and all three head in.

Execution:
Player in tunnels remains there. In the meantime the three players rushing into CT mid get ready to enter B. Before this execution, player inside tunnels tries to call attention to CTs in B site to distract them and split their attention when CT mid players attack.
CT mid players should throw a couple flashbangs and optional molotvs to car and B plat and enter. B tunnels player should enter at around the same time as B mid players. Once B site is taken, plant bomb and call it a day.
AWP lurk has many options while strat is being executed. Defend long doors, defend short a, help B tunnels player in case he gets overwhelmed by rushing CTs, etc. He is key to keeping CTs from flanking the rest of the team.

Possible flaws:
Overly aggressive CTs can be a problem, especially in B tunnels and short A.
If B tunnels gets overwhelmed, T spawn AWP can try taking out one CT or two from T spawn. In case of this happening, mid players should use any extra nades to slow down the tunnel-rushing CTs, giving them a couple more seconds to execute strat with a little less fear of getting sacked by those CTs.
If short A gets rushed during preparation, mid T's should be alright, but that depends on their individual skill. If it gets rushed once strat is being executed and B is being taken, AWP player should try his/her best to stop them. One of the three B raiders could cover mid double doors in expectation of mid CTs.
Second major flaw is the AWP player's possible need to cover many angles. If CTs were to push through both long A and short A during strat execution, for instance, the AWP player would be divided.