you can really only have anderson's striking and gsp's takedowns if you have their body type.
If you don't have the height and reach of Anderson, then you can't do it.
Even with Gsp. Gsp gets his takedowns with his striking. He'll "poke" at you on the outside with his long jab, superman punch, kicks. Then once the opponent overcommits Gsp changes levels for the takedown. If Gsp had a short reach, then his takedowns won't work.
So anyone good is all reach?