First of all:
Thank you for your work
I would be very thankful for some long iron spikes of instand death
They could be placed on the floor(and hopefully fitting to all walllsets) being harmless, until the party falls on them and ends up with the dead animation of the cube boss.
Why do we need mosquitos? We already have the shrak torrs. Maybe giant Wasps for the Dungeon Master recreators instead.
Many possible monsters like chimeras are too long for the tiles. Imagine the dm red dragon as grimrock creature, it would look like an evil toad or something like this.
Would it be even possible to create/animate a two tile Monster?
Do you remember the Oitu from Dungeon Master?
That beast could fit in the place of the crab based insect.
