Mike,
Several of those trees to the right in that last picture could come out and greatly benefit the visual aspect of the tee shot...the top two or three are vital to protecting the corner for longer hitters though so I would discourage removing them.
About the skyline view from a couple posts earlier, those trees are at least 100 yards beyond the back edge of the green. I don't think they help distance guaging at all.
I don't know what the rule of thumb is for bunkers populating bland versus exciting terrain, but I have long felt Huntingdon Valley could be every bit as good, fun, interesting, strategic, difficult etc...with about 40% of the bunkers it currently has...
it would probably be more difficult because of the greenside terrain.
Re: #A-5, most balls that miss that bunker do go in the water. The uncertainty of it's current setup should ring true on here to those that like "luck" and "random results". A ball in the air headed towards the bunker could go in the creek, in the bunker, plugged in the bunker, in the grass with a very difficult stance, or on a nice flat spot with a reasonable chance at par...seems OK to me.