I am using my phone, so won't retype everything.
Basically, not being able to delete things is a MASSIVE advantage for those who are already fighting with all advantage. They are fighting at their safe zone, with npc guards helping, with zero consequence for dieing except losing 1set of gear (which is a very small consequence since the bank is right there in their safe zone.) On top of that, if the fight is at a town they are also constantly reinforced by people logging in.
Also, picking up other people's stuff is a criminal action, so ideas about other people picking it up, or it helping new players are bogus. No one fighting will turn criminal because the other townspeople will turn on them. So everytime someone dies they lose nothing and are right back in the fight.
Rorry, the solution is pretty obvious. Don't attack people "at their safe zone". Strategically and tactically that's a big no no.
Even Sun Tzu said something was fucky wucky about going into hostile controlled territory.
Your complaint is that strategically it makes sense to delete breast plates and weapons in long drawn out battles, that made sense with the limitations of the first game, however this game is new and the idea of red groups roaming from town to town to pick a fight needs to die.
It was never considered 'peeveepee' it was just a nuisance for people who had their gameplay experience invaded by guys who only gave a shit about their instant gratification and egos.
Real warriors always went to Kranesh or GK to pick a fight, because there were other warriors there looking for the same thing.
Back to the topic though, MO2 is supposed to be an evolution, not a simple continuation of MO1 and retaining mechanics borne from limitations of the first game is both narrow minded and ill advised. Quite frankly we don't know how this will play out so let's not be so rash to discount quickly the idea of removing the ability to delete outright in favor of dropping items into the world.