I don't think there is anything better you can do to develop an impressive-appearing chest than a lot of heavy upper chest work. I put most of effort into upper chest movements these days. It can also be helpful, even though you've had years of lifting experience, to re-evaluate your form on bench. I found that once I passed the 225 lbs mark on bench, I had to re-train myself how to do it properly even though I have 10+ years experience. Watch some powerlifting instructional videos. The crucial point is to tuck your elbows as you go down so that you take the strain off of your shoulders. I see far too many lifters benching with their elbows parallel with their shoulders all the way down. You simply cannot go as heavy as you need to with that form. I guarantee that once you can rep >265 lbs on flat bench and >225 lbs on incline, your chest will be developing nicely.