I think there's your real problem.
Traps is very very powerful. Sure, it's slow, and on a fast moving team it's not going to do a huge amount but if you're on a team that's moving that fast, clearly it isn't that necessary and you can kick back and focus on your primaries - but you've still got your lovely FFG following you faithfully allowing your squad to get in their and biff stuff on the nose.
But when the proverbial excrement impacts a rapidly rotating impeller, you can hold everything solid and allow you and your team to hold a line, just by popping down some useful tools and letting henchmen and teammates do the damage
Not every set needs to be build to help you rush headlong into danger. If you ever play it solo or in micro-teams you'll find out just how useful it really is.