So I took some time and I have decided this is my ideal suicide squad.
1. Reverse Flash
Eobard Thawne is considered a genius in the 25th century and his genius is only exceeded by his super speed, and cunning. He is not only capable of manipulating what ever or who ever is necessary in order to further his goals, making him a perfect addition to the suicide squad.
Much like the first member I mentioned (Reverse Flash) Sinestro is a master of manipulation and uses fear as the main tool of doing so, he is also one to stop at nothing to achieve his goals even bond with the physical embodiment of FEAR itself. He brings obvious skill and uses fear to dominate the battle field making him an effective member of the squad.
This simple giant is not only a physical match for superman but he literally has his abilities in REVERSE! Now I know what you're thinking he doesn't have a brilliant mind or an alien powered ring, but he does have enough fighting power, and abilities to sub due superman making him a vital part of the squad as the "muscle".
Thomas Elliot is basically Batman if he didn't turn out with an unbreakable moral code and all the cool League of Shadows training. He is the perfect nemesis for batman not only in a physical fight but in intellect and strategic levels too. He has serious marksman skills and is deadly at the very least, the perfect and simple ending to a perfect Suicide Squad list.