Im not sure about this some of the old early game base rushes in coh were pretty silly. Get a couple of half tracks fill them up with infantry and charge the enemy. You know exactly where there units are going to spawn and you just mow them down as they spawn. I believe relic fixed this in coh2 by giving you multiple spawn points around the base so if you do get rushed they dont no where your going to spawn stuff so you can organise some kind of counter play or just ignore them and cap the map. Would it not be possible to have it both ways so you can spawn from either edge of the map or spawn from your buildings?
imo, this was is problem for vehicles and tanks and since they are still off map I am content with this new spawn system