Just chiming in to let you know that I have been using both Aviator v4 and Red Bull v2 for several seasons, adapting my squad to suit both tactics, and from my personal experience I feel like Aviator v4 is the superior tactic. Both are excellent though and among the best tactics of this year's FM.
Looks very promising although I tend to test tactics for several seasons reserving judgement. I have been using the original Red Bull tactic since the start of this save and fully tweaked my squad towards it to great success. Current avg. team CA ~ 160.
The "Kungfu" version is the latest tactic in the "perfect 343" series:
"Taking advantage of the resurrection of the forum quickly update tactics. This time without the new tactical template design. Remove all the team's instructions, leaving only the three necessary settings.
Did not waste...
343 v4.5:
"Updated the perfect 343v4. The change is mainly focused on the offensive. v3 multi-hit v4 more playing the sidelines so you can see the situation call each other. The 343v4.5 is to enhance the attack power and become less concentrated in the attack."