Not sure I really understand what the thinking is. I don't really understand how removing some combos of Ax and Kx will increase your equity of other hands. Against a given range, on certain boards, hands have a given equity. You can't increase that equity by removing hands from your range, I don't think, as the range you are playing against is unchanged and the board is what it is.

However, my first comment would be, not to look at playing the BB and SB identically. Preflop play from the SB is much different from preflop play from the BB. In the SB you are always going to be OOP postflop. Also from the SB you don't close the action preflop, as you still have the BB to act behind you. Lastly your pot odds from the SB are not as good as your pot odds from the BB. So typically, preflop, you can defend with a lot more hand from the BB than you can from the SB.

Additionally, you don't want to have the same strategy from either the SB or the BB vs all positions. Your defense frequencies from SB/BB are going to be much different if UTG opens versus if the BU opens.

I personally employ a depolarized 3bet or fold strategy from the SB. That range has a variety of hands. It has broadways, pp, sc. The range i use vs UT is the tightest range and it gets progressively looser the closer the opener gets to the BU with the vBU range being the widest, as typically the BU is opening the widest at the table. This can also change depending on who I am playing against and how tight or loose they are.

I think you want to have SC in both of those ranges vs all positions. You want to have a good mix of hands, you just want the SB defense ranges to be tighter. SCs have good playability in a lot of situations and they have good realized equity.

Hope this helps a bit

Thanks for the really detailed reply much appreciated.

I will digest and build the adjustments into my strategy.

Thanks again really want to improve my game and move up a few levels