I posted that topic on the official forums mainly from what I seen a lot of WHMs are horrible at recasting buffs when they are dispelled. There are some good ones but most pugs I have joined the mages don't recast buffs and I have to use a weaker shell because of it since I have to cast my own.
Completely understandable
I will vouch for the WHM side though. If they don't have things filtered correctly the text could be going by too much and see too many people getting dispelled and don't pay attention to what is dispelled off of you.
But that comes with practice and good whm's will notice that most of the time. If they miss it then just speak up and someone will get you. I know it is one of those "But I shouldn't have to do that" situations, but I think it is better to just type a quick request to let your team know instead of not saying anything and possibly dying from it (not saying you are, just saying it in general).
Part of working as a team is working together, and if your WHM happens to be the weaker link then help them out if you can by letting them know.
With that said, I don't think PLD needs Shell V because you should be with a mage if you need shell at all (as I said in the OP).