How would newcomers tell how trustworthy an escrow was? How long someone has been around is very relevant especially when you factor all the other different parameters you propose to get rid of. Age or number of posts etc doesn't equal trust by itself but when you factor in other things like the trust system it gives you a pretty good idea of who you can and cannot trust. If everyone was on a level playing field from newcomers to long-time trusted Legendary members it would be a nightmare.
To improve security I would suggest that staff or theymos either do the escrow or get real life id and collateral from anyone running any kind of business from banking, investment and ponzi schemes.... And give them some commission to make it worthwhile etc
In layman's terms, anyone who's holding the coins of the community for any reason should be held more accountable than what we have now
I'm guessing most staff and even escrows wouldn't be comfortable providing ID, nor do staff moderate on scams anyway. Staff shouldn't be blindly trusted either and I'm surprised you're suggesting this. Staff is just a rank and doesn't necessarily make them anymore trusted than someone else. Providing ID or other documentation isn't a guarantee of anything either as 1) they can easily be faked 2) they would give people a false sense of security - people who's identity has been previously known or have even provided legitimate ID have scammed before and scammers will then take advantage of this system.
Its not the perfect solution but it would certainly cut down on scams where people trust an account with hundreds of posts etc
It's not about having done 'hundreds of posts' but you take many factors into consideration including how active you are and your previous trade history and that's why these details are all valuable informations to help you make your mind up about a user. Someone who has been here for years is very unlikely to rip you off for 0.001. A newb who's been here less than a day is though and getting rid of these things would make John K look the same as randomscammer69 to a newcomer.