Something I can add though is that some picks and team's efforts in general seems be treated as expansion teams or something which I find unnecessary.
I don't think any team is treated as an "expansion team" in the sense that it is viewed in a negative light independent of its roster. Some teams are certainly stronger than others, but there is no inherent prejudice against rookie GMs here that I've ever seen.
It is certainly true that the ATD is unforgiving to rookie GMs, but this is due to the extremely large volume of information that one must process, and the high level of planning, flexibility and (most importantly) original research necessary to execute a successful draft strategy. All of the veterans will tell you that they took their lumps as rookies (I did, too), and that their teams have gotten stronger over time as they have mastered the system.
It's easy to underestimate going in just how difficult it is to win or even finish high in the draft, but the truth is that you are swimming with sharks here.
Another thing that would be fun to know but people won't admit it (but probably visible when looking at votes) is if people down vote another team because they had an argument with that team or perhaps try to get a good team to face off against a team voted as an average team to try and get that better team a chance to lose before they get a chance at facing off later in the playoffs.
The voters are humans. The things you mention have always existed to some extent in the ATD and probably always will. There's no sense dwelling on this issue, and at any rate, we're only halfway through the process thus far in 2015. One thing that has been proven again and again is that the ATD process (which includes the playoffs) does a very good job of separating the wheat from the chaff in any given year. The conference finalists are almost always teams of extremely high quality, and the champions almost always fully deserving. I've only ever had serious reservations about one ATD champion since I've been affiliated with the draft, but I'm not going to dig that up right now.
It might comfort you to know that the tiebreakers we use in the playoffs take the possibility of conflicts and rivalries into account. If the teams in a series are tied in terms of win/loss picks, the first tiebreaker is number of games required to win (the voters pick not only who wins and loses, but also in how many games). If this is also tied, we look at cross-conference voting (ie. voters from the other conference) as the third tiebreaker up to the finals, and in the finals the third tiebreaker consists of voting from all franchises which have
not faced the finalists in the playoffs. It is impossible to completely eliminate the possibility of humans doing human things in the voting process, but we do our best to reduce the likelihood of it affecting outcomes.
Even if you are eliminated in the first round, do yourself a favor and stick with the draft to the end, observe the process, and take part in it. Your vote counts just as much as anyone else's, and you may learn to appreciate the process a bit more once you've seen it all the way through to its conclusion. The playoff debates can get pretty intense.