Currently, pots, rockets and brambles don't scale in damage by tier. Hence, while in t1 they are mildly dangerous, they are pretty negligible in t2 and t3. I'd like it if OOO made these scale by tier, since brambles are a false alarm and using the environment adds depth to gameplay. Though pots aren't really expected to be used in combat ('cept for fire ones), rockets are supposed to, and if added to t3 levels they would be pointless, and already are kind of a joke in t3 LD, where a giant explosion doesn't hurt anyone.

I'm not too sure of how damage should work for the brambles, but I think that using the blaster line to model pot damage would fit well, seeing as it's already based off what is essentially a blaster (proto gun). And then the rockets' damage could be directly scaled from that, meaning that:

35=least damage for a blaster in stratum 3
72=least damage for a master blaster in stratum 5

7/15=.4666
35/.4666=75

so 75 is the base damage for t2 rockets, and 35 is for pots

72/.4666= 154.3

so 154 is the base damage for t3 rockets, and 72 is for pots.

The other option is to precisely mirror blaster damage by depth, divided by the same .4666 for rockets. However, the 3* and 5* equivalents would have to be used to see much difference across a tier, meaning that you'd have to use an imaginary 1* blaster's damage to decide for t1.