I am an old school SC player in the SC2 beta.
Just a couple of opinions:
Mass'd teir 1 units are cheap, quick and disgustingly powerful. A terran player with a lick of ability can absolutely dominate with the typical marine+maurauder (+ medivac) strategy.
Void Rays? I play protoss primarily, and I'm a pretty decent player, and I'll admit that VRs are the go to unit for me on most maps (with the speed boost they're awesome), but they have no chance against mass terran T1. They go down fast. A terran player that allows himself to get VR rushed just sucks.
Speedling rush is OP. I hate it because it's getting to be a crutch for me when I play zerg. On that extinction map, it's rididuculous. In my last 4v4, I killed 2 players and severely injured a third's production with 2 fast queen spore batches of speedlings. Also, the fact that I put an extractor up early makes me a rush target, but unless it's its a joint rush, I eat it alive and then wipe the rusher out. Speedlings are as OP as reavers are
BTW - reavers are OP simply because they can be micro'd to the point that zealots cant touch them (without the charge abaility).
Lotta units are underutilized. I'm working on those. Wont tell my best secrets, but my favorite tech switch on zerg once I have expanded a bit is to ultras. Holy shit to players panic when they see 10-12 ultras run right pas their D to their soft spots. They tear D up fast too.
The fact that no one uses templar as protoss needs to be corrected. Templar were huge in the old game. And damnit I miss archons. The splash damage was sex, and shield batteries + archons FTW
The ability to spawn/recall/TP/etc at remote locations on this game is really the toughest thing to master. The Zerg players that spawn creep and then pop a nydus, or spawn a hive, in the corner of your base, are phenomenal. I also saw one zerg player creep and tumor most of the expansions so that workers couldnt take them. That was smart and well done with some microing and rapid air response.
But the best strat I saw all week was the terran player who blasted through my textbook terran box in early in the game (before I had seige recesearched)... he did it with a stack of zealots behind him - 4 or 5 upgraded hellions, very very early in the game. That damn flame thrower upgrade melted my defenses so fast I was swearing out loud. Holy crap that is nasty. I'm dying to try it... haven't had a chance yet.
This is a good game, but it differs wildly from SC1 - the best players are massing tons of cheap Tier 1 early and its just way OP to do so. Too many of the midtier units dont have a purpose appropriate for their stage in the game.And the T3 units tend to be too fragile.
Also for got to mention that early stealth rushes are very OP now that OL's arent detectors. Fast DT rush on a zerg player is very mean, especially to us old farts who still instinctively think that OLs can detect.
Does anyone use Ravens?
I miss lurkers and reaver drops.