hi, I'm Vorty, that new boomkin you might have maybe seen in the wild.
I may be new here, but in just 3 weeks i sure have seen my fair share of your inner workings. I also come from an extensive background of "top server" mentality down to "super casual".
First off i would like to say... any "rank" that 100% guarantees a raid spot is always going to cause issues, especially if people feel that slot is wasted on a sub par player. People who have a for sure slot become lazy and stop trying, I've seen it happen many times over my long many of years raiding. This includes Officers, class/ role leaders, and "Core Raiders". If you want to actually push from a super casual to a more aggressive approach on raiding, you need to ditch the for sure positions. Tanks are the only exception to the rule, and 99% healers. DPS are a dime a dozen, and the people that are situationally aware and perform close to their maximum potential should have a spot over someone who is comfortable with their guaranteed spot dying to simple mechanics and doing subpar performance. Long time veteran shouldn't matter if the person just plain doesn't care about beating the encounter and moving on.
You have multiple people handling DKP, not every single GM/assistant GM/officer + their two best friends needs to always sit in for every single encounter, its rediculous to even suggest that you are above and beyond everyone to be around for as spot that could benefit others greatly.
Officers should also know the classes they play and abilities, I was a crappy trial sat and have been spewing suggestions and ideas for various encounter trouble spots from the side lines, I shouldnt be doing this.
Raid spots should be earned, and rotated. Side grades and no upgrade bosses should be sat out for people in need. Don't be selfish. you gain nothing, and they lose everything. Trials should only be tested on farm bosses (assuming room can be made). The flip side to trials being sat all the time is they are set up for failure later on unless people share resources. Gear shouldn't be sharded, it should be distributed.
Anyway, I have more thoughts on everything, but I had very little time.
edit:
I Would like to state I'm not trying to rip apart management, just pointing out the negatives that come with for sure positions. especially if you want to progress further with fewer fuck ups.
you have people WILLING AND ABLE to push progression, but might pass over them due to people in a rank that grants them a spot.