Well, I'm not talking about premade teams, obviously. In PUG games, the dynamics are: (1) for example, doggu hosts a game -- I join; (2) some experienced players join and begin bitching about the lack of balance; (3) a newbie/bad player joins, and is attached to me and doggu. Now, what happens is this: the newbie dies a couple of times > our main carry/dd player (be it doggu or someone else) begins to... ahem, criticize his skill most vehemently > the newbie gets offended and ragequits > we heroically lose 2v3 even to weaker players, since they tend to go either the 'holy trinity' or any other UB-involving assassin-heavy combo.
Kinda goes without saying, but still... It is not about doggu specifically. I had the same experience with Quincrane, TSK-knockout, Dreamcatcher and even with Renz's super-UB (minus trash-talking, Renz is always a gentleman). After much thought invested into the matter, I believe it's not about me, either. Unless I'm trying out a favor item or a build, I usually don't die at all, assist whenever possible, micro the bastards and shield/heal on time. Plus, I buy 85% of the upgrades. So I believe I'm doing my job just fine (I don't get criticicized directly lately, but I do hear a lot of funny remarks like: "Probably if you were Sedna in this match..." when I'm QoT, and vice versa) . What I'm trying to say is: while the skill of support player matters a lot in the context of coordinated premade team, it usually won't change the course of events in 'casual' matches drastically, especially while already handicapped by having a weak player on a team.
That's one of the reasons I'm studying Oculus now. My playstyle is obviously not suited for pure assassins (except for pure Ice TB, with whom I'm doing fine, but he's sadly only viable in certain matchups), and Occ is, well, a nuker general, he's universally solid and safe, so... Another option for me is Regulus, I think. He's the indirect support character, after all. Pacov advised me to study Rook next (that was a long time ago), but it turns out I suck with the turtle assassin almost as much as I suck with the pitbull assassins