Ok my comments seeing as I haven't done so yet:
Good:
Teamwork:
I like the fact that this time you're working with others this time and you know who you are (pop quiz; In Q2 your name is Bitterman but it's not very obvious).
Vehicles:
Being able to pilot any kind of vehicle on Stroggos is a welcome addition and something that had to be done.
The construction plant:
Very very cool, atmospheric and genuinely cringeworthy in places, could do with a fit more 'pain' but other than that, awesome.
Bad:
The sky:
If that sky remains when the final product is shipped I shall cry, in Quake 2 the sky was dark orange with patches of red and yellow, in order to make the player believe that this is still the same Stroggos they were running along in 1997, then it has to look like it, the sky as it is currently just makes it look like another planet..
Overuse of colour:
I'm seeing screenshots of Strogg with red metal suits and I'm not happy about it. Take a look at the old Strogg designs and you'll see that the metal parts are very plain and usually caked in blood, to me this shows the Strogg as being barren and cold, as if there's nothing really in there except malice and the desire to wipeout mankind. The strogg player model looks like a ninja, the orange does not look good imo..
I couldn't see in evidence of it in the video, but is there a damage system that expands on the original pain skins of Q2?