Had a run through HLDM:Source, and the maps are simple conversions with small touches here and there. The towers in Crossfire now have modelled canons\turrets but they are bugged to oblivion: grab one, quickly look to another direction and let go. Et voilá, spinning unusable turret. The secret room works as intended though.
Bounce remains the same, just using displacement-maps everywhere, but unlike me in my remake, Valve havn't taken care of typical "squash & stretch" ugliness on some displacement surface textures (due to vertices not being equally spread from each other).
Every map is a conversion with some new details in some places (like the new rope swinging platform with *gasp* crates in Stalkyard, just a detail).
This makes me wanna remake every map to show them how it's done
Plus I hope some modeller or Valve themself could up the viewmodels to par with the HL2 quality.