First of all, welcome back, second, walls are incredible harder to destroy now, even stone hedges take 30 minutes to an hour to destroy for everyone, if you have braziers and torchposts firing all the time, a brick wall or plank fence will keep most griefers away, only organized factions might go trough that
For more information about the pvp changes in Providence, check the official patch notes about raiding
viewtopic.php?f=2&t=11742Specifically:
'Titans'
Raiding with High Humor characters has been rebalanced. Players will gain no additional benefit to damaging an object once they have achieved approximately double the soak of their target. So, if the target has 50 soak, max damage will be done by a raider with 100 Phlegm. The only benefit of having higher humors is that the raider will have more time to destroy and to take hits from braziers and be able to do max damage for more of that time.
Soak damage of plank fence is 200, Brick is not really known