Some time ago, I did a Top Ten on Barrier, writing something about how it’s one of those sleeper powers that can totally steal the show when built right.
But Barrier has one big, stupid problem: It can only be used on clear terrain.
"So I can use my powers to make shields of ice, but can't turn the water around me INTO ice? LAME."
Barrier should be air-tight; the appearance of unoccupied hindering terrain or water terrain or special terrain shouldn’t preclude the placement of the Barrier token.
Therefore, the #7 most needed change to HeroClix is the change of this line to Barrier from this:
“place up to four blocking terrain markers in adjacent squares of clear terrain that are all within this character’s range (minimum range 1)”
to this:
“place up to four blocking terrain markers in adjacent squares of unoccupied non-blocking terrain that are all within this character’s range (minimum range 1)”
The only wrinkle is how would it interact with objects in squares. I’d rule they can coexist, but there might be a ruling I’m overlooking.