Why remove trip flares...You did that change in your mod also.
The problem with trip wires I find is that they are very rarely useful now for anything other than revealing the FoW and annoying your opponent, and take too long to construct to be worth it.
This wasn't the case originally, when models bunched up more and SU only had to worry about 4 man Ostheer squads. It was previously possible to have two models killed by walking over a trip wire, now it's only ever one (mines in doorways notwithstanding), and with the 5 man volk squads they are less effective at reducing the enemy firepower.
I like the idea of them but I think they are too weak, I would like to see a slight buff with a corresponding cost increase.
As for conscripts in late-game in general - most strategies seem to involve relying on doctrinal guards / glorious Jesus troops and slowly replacing the conscripts over time (leaving 1 - 2 remaining for reinforcement). Is this such a bad thing? I don't think so.