Well actually there are quite a few things without save against their abilities other than avoiding the ranged touch attack... The spider queens with the web bolt is an example but there are more out there as far as I recall. I believe this is intended to make sure that you actually need a group to take the creature down since you can't live through it without an immunity that can be given through a spell, just my oppinion about it. I know this is sort of unbalancing towards mages/clerics but again, there are other places where fighters are highly needed so I think this is not an unfair advantage at any rate...
And I believe your plan against Fisty would fail because he is probably immune to mind spells, but that is just a thought
