We've been observing feedback on the topic and wanted to give a heads up on two hotfixes that are currently undergoing testing (not ready yet) to address these concerns.

Increasing the spawn rates of elite creatures used for trapping.
Deadly Iron Trap will require players to have tap credit on the creature being trapped.

The hotfixes that were in testing from last night have been implemented and should now be active.

Garrison Buildings

Barn

Deadly Iron Trap now only traps an elite creature (Direfang Alpha, Ironhide Bull, and Wetland Trampler) that the player or party has tap credit on.
Spawn rates for Direfang Alpha, Ironhide Bull, and Wetland Trampler has increased slightly.

Trap Stealing