You are overweight, have lax skin, residual fat and caved-in (crater deformity) nipples. Too much tissue was removed at one time.
Yes, improvement (not perfection) can probably be achieved with additional surgery. But remember, you have scar tissue from two prior operations, which makes any new surgery more difficult and less predictable.
However, I do believe improvement can be had with additional lipo, skin tightening (which would result in scars -- but would be a decent trade-off for a trim chest) and some type of surgery to improve the nipples -- either flaps or skin grafts.
Dr Jacobs
PS would be pleased to provide a free email evaluation -- just send me your real email address in a PM and I will provide some information to you. EWJ.