There are clearly an awful lot of preconcieved and unfair notions going around about vector folk, of course we have some immature players, what server doesn't? do we have more...hmm can't honestly say but I am absolutely certain any difference is actually very small. The evidence of event reports clearly shows vector to hold its own very well imo, rp may be different but what it benefits from is consistency as it deals with one approach to hostility rather than having to adapt to someones on/off invulnerability field. The sad irony is that, much like the game, the potential of Vector exceeds the other servers in its depiction of a living rp world but as a result of external factors, these preconceived predjudices it isn't given the chance to realise it - it needs the very players who are the first to pass it by 
I will concede is that the hostile tag does allow disruptive elements more power, which is why its down to the wits of the player to make use of their environment to interact in the manner they so wish...in some ways it amounts to an elevated challenge, it has to be an element that rp itself involves, but in fact it is far easier to interact as your hearts desire in vector than anyone here suggests.
The real problem that pervades the game as a whole is the lack of real consequence for your actions, a homicidal maniac is as free from comeback as a philathropic pacifist, DE is far too mild to deter anyone or anything, the ability of players to police the matrix is nil as there is no real threat or incentive that can be used to get players into a mutual frame of mind.... all out pvp would therefore be too chaotic imo (but if that element of conseqeuence could be realised it would be worth the effort).
The days of technological restriction limiting freedom in game mechanics are fading fast, rp has to evolve; to be less structured, more flexible, more geared to a realistic and credible environment rather than the run on rails point a to point b style of times gone past.... MxO could lead the way still but it needs a level of flexibility imagination in its community to realise it imo.