Maybe the addition of some one-way trap doors to the tunnels to let regular sized characters get out could help. I like that there are ways to chase Calico and presumably Rem past the little entrances so I wouldn't want for it to be impossible to enter them with Mark/Phantom strike etc.
Adding with something that happened in a recent bot match. Around the 24 minute mark Dynamo bot attempted to get on a zipline and got stuck in the bridge.
