I had a play with the tactical spawn last night and I would say its effective about 50% of the time, the rest of the time it spawns you right next to enemy, or a few yards from your spawn. The other problem with the tactical spawn is you become isolated from the team and have to lone wolf which means you often just die a lonely death in some obscure corner rather than with your mates back at base where you stand a remote chance of being revived. It is a partial solution to the problem but it limits your choice of tactical ability, only allowing you tactical scan as the recon or medic ability with the support, which is okay, but takes away the fun of choosing your ability. The proble is it solves an unpleasant unfun situation with another unfun situation, it would be better if the unfun situation didnt occur, namely the spawn camping.
To be fair I didnt think spawn camping was especially bad last night, it was more a case that the other players were superior players which meant we spawned, died and lost games with unerring regularity, not sure what we can do about that. On killzone 3 we had a pretty tight group of players and on the whole we did quite well, I wonder if some of the frustration people are feeling is a result of a lack of adjustment to the new game, I certainly find the new game more difficult to do well in than the old one, guns seem to be more deadly and there are no second chances, you meet someone and you cant run away, its kill or be killed, it lacks the room for manuevre killzone 3 had, or at least thats how I feel about it. It has taken me quite a while to get to grips with the new killzone.
I am not keen on the new interface, the messages telling you which mission you are on are small and hard to see, I often find we have changed mission without realising it, which I dont think helps squad cohesion and focus.