Valour... it's not really so much about comparing to the other professions for the sake of it - or in a 'they got that so we want it too' kind of way. There are several important things going on:
1) There is a widely held assumption that some of the MP debuffs have these heavy restrictions on casting, with cool-downs and immunities, because these nanos are considered to be extremely powerful... and so need to be tempered in some way to balance this great power.
But it seems that other debuffs of somewhat similar power do not have the same restrictions - and so then this leads to questions of whether the MP debuffs are being fairly restricted - or whether there is some other reasoning behind the restrictions, which we are not seeing.
2) Team Contribution has been a very important issue for the MP over the years. There has been little, over the years, to give a team a real reason for picking an MP over another profession. The weaknesses in the MP debuffs in PvM means that this looks to be becoming less of a reason for choosing an MP over another profession - particularly when similar debuffs of more power are available to other professions, who have other clear roles in teams.
Relative contribution to teams is always going to be about relative balance.
3) Sometimes it is necessary to understand the interactions with tools of another profession in order to grasp the overall balance. For example, the MP gains to an extent by the Crat Init/Dmg debuffs moving into the Doc line. It also means, that when considering improvements to the MP line, which should stack with the Doc line - then allowances need to be made in both to some degree.
If it's too powerful to be able to have both debuffing at the same time... but the MP loses too much from having 1/3 up-time on the Dmg/Init debuffs, then we may want to ask for a more 50/50 up-time debuff for both Docs and MPs, so that a good level of debuffing could be managed overall. But if the Doc debuffs are to continue to have immunity/high resistances on key mobs... then perhaps the overall balance picture looks differently... and so the requests made should be modified.
Sometimes, these discussions can look like sour grapes kinds of posts or like posts that are just based in jealousy or envy... but these discussions can form the basis of an informed discussion to find good solutions that suit the needs of all professions and the balance between players and mobs.
In order to suggest good alternatives it is essential to understand the complete picture as well as possible.... and sometimes that picture can in fact be quite obscure.
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