again. nice tree. Pic 4 and pic 3 on the second set is your front in my opinion. best nebari, movement, interest and lean of the trunk.
A small amount of carving on the chop would enhance the tree. You can carve on the branch stub lower down in a similar way or even connect the 2 with a thin shari.
If you don't want any deadwood, you can slightly elongate that chop longitudinally, and let it grow wild a couple of years, and it may heal, but why bother? and old pine in the forest is gonna have some war stories, why shouldn't yours?
If you go to some of the European forums, you will find more info on Scott's pine than you can read in a year. Try bonsai ejit or ireland bonsai society website.