Nigga let me preface this with saying I studied broadcast journalism for 2 years, does this make me an expert? No way, but on that same train of thought getting into sports journalism is something that was on my mind for years of my life. So that being said I definitely have some opinions on the matter.
I am legitimately happy to hear you are on the cast for the night, how you cast triggers the same serotonin-laden part of my brain that feels euphoria watching most if not any sports cast with a decent broadcaster. You treat TF2 like Mike Tirico treats Monday Night Football, I get that kind of vibe.. and I've spent tens of thousands of hours watching sports broadcasts. The set of legitimate skills that you have on a technical level is perfect for broadcasting anything, let alone a video game.
You have some of the best 'pass to a co-caster' techniques/transitions I have heard in TF2 as well. You're very good at working your co-caster/color commentator into the mix. I feel bad even because when we casted together you threw it to me perfectly many times and I was out of sync/fumbling myself. The only person who can 'work with any co-caster' and perhaps carry as cast doing play by play as well as you've managed would be cbear. That's pretty noice company to keep.
Something that pisses me off is shit like this:
http://i.imgur.com/SJwtM8Z.png
What the fuck is that? It's like a running joke or something, I mean I know this community adores mob mentality in regards to hating people but that's the kind of shit no one deserves to see, let alone someone donating tonnes of their time to keeping as much high-level TF2 in the limelight as possible. I wouldn't just call this out if it was a funny one-time troll but people seem to get off on hating you. Please dear god, do not take that rubbish to heart.
What to work on?
1. Perhaps talking over people just a little. (I don't hear this happen with Marxist, who I think is a perfect co-caster for you) but by the nature of sometimes us throwing together casters at the last minute this always can't be the case.
2. Honestly, sounding uninterested when the co-caster finishes talking sometimes. I know them talking is you getting a break, but before you start doing play-by-play again you sometimes seem very " mhmmm, yep *nods head* " as if you were paying 50% attention to what they just said. I don't know how you actually improve this, but just something I've noticed.
TL;DR you're doing great, and since I just sucked your dick the least you can do is cum on my face. God bless.