For the invasion to have worked they would have needed the best of WCW ie. Ric Flair, Goldberg, Sting, Steiner and the NWO. Then the WWE would not have to of used Stone cold and Angle as deserters for the WCW/ECW team.
I always thought the Invasion story line could have worked with the talent WCW had (The above mentioned). And my dream invasion storyline would have ended with the survivor series match being..
TEAM WWF.....V.....TEAM INVASION
STONE COLD........V.....RIC FLAIR
THE ROCK...................STING
HHH...........................GOLDBERG
THE UNDERTAKER.........SCOTT HALL
KURT ANGLE................KEVIN NASH
HBK ..........................HULK HOGAN
The finally in the match had Stone cold v ric flair and Hulk Hogan, And just as it looks like team Invasion was about to win the match a face turn from Hogan (NWO to the old red and yellow Hogan) jumps on Ric Flair and win the match for WWE, leading to a great pop from the WWE crowd.