I'm going to break this down in a manner very simple. Simple yes-no questions.
A) Are there PC's currently present in the Vallaki ecosystem that are above the level-restriction? Y/N
B) Are those PC's able to, without any recourse in the rules, engage level-appropriate PC's in PvP as according to the rules of engagement? Y/N
C) Are these PC's able to, without any recourse in the rules, corpsehide lower-level PC's for in any manner not doing every effort possible to diffuse and disengage from the PvP? Y/N
D) Could these PC's, if the players decided to, without any recourse in the rules, elect to override any lower-level PC's in the area, who have not left the domain to build factions? Y/N
Because all of these should be answered, 'Y,' and that is the problem with the level restrictions in the area. I don't understand what kind of issue you think persists that is more important than the quality of experience PC's experience in the very entry area to our server. I'm not going to resort to ad hominem, because if I have to attack you, or your motivations to defeat your argument, my argument is not one sound enough to stand on its own two legs.
Vallaki's level restriction is an exploitable system that punishes primarily those who remain there, and this forum posts continues to be resurrected over the years due to discontent with it. Every time, someone comes through and dismisses it as an invalid issue that requires no adjustment, and attacks -- In one measure or another -- The motivations of the individual who is speaking up for a sentiment that is spoken about widely, and disdained widely, by the vast majority of PoTM's veteran playerbase.
Now, you can either choose to ignore the civil conversation regarding it, and simply ignore the issue -- Causing it to fester into discontent and resentment. Or you can acknowledge it is an issue out of your hands and attempt to suggest a solution to this widespread discontent to resolve it, so that it we don't have to deal with this kind of post again. Because it's never going to go away, unless it outright becomes illegal to speak of it or someone changes the system.