After playing a bunch of quests and reading the others the base game quests put a high importance in mobility Grisban seems extremely underpowered. With 1 awareness he is always the target of tripwires, negating his movement, which he only has 3 to start with. His heroic ability will only ever trigger with disease, as immobilize will go straight away perform the ability triggers, stun is removed as an action, and poison is a strength roll to resist which he has 5. Disease doesn't even do much as his willpower is 3. The heroic feat is nice I will admit but does not negate the extreme downsides. If there was a quest where you only had to kill all the monsters and there was no time limit then he might be able to achieve something but I have not come across a quest like that so far.
Very interested to hear any thoughts on any point raised.