Pretty good dub, although Kamina's VA really took some getting used to. The others are alright, no problems.
Some parts of the episode were cut out though...bad move, but oh well...
Good luck to everyone enjoying the show for the first time.
I'm in the middle of a re-watch (literally), so I'd rather not spoil anything (which is ironic though, considering I spoiled myself silly the first time around)
Just the obvious: You haven't seen anything yet.
Things get way more awesome...and, yes, also way more ridiculous, but by that time you probably won't care (and shouldn't). There are some small negatives as well...but you'll deal with them all the same.