Considering that you also want to get free attacks against people who enter the area after your turn has ended, yes I think it is more inappropriate than a strafe. This isn't a full action's worth of shooting, it's a full round. It's ongoing area control and you have to consider that the majority of what you're doing happens after what you would normally think of as being your turn or action.
Uh... yes. That's why my first bullet was:
• lasts until the shooter's next initiative count, unless interrupted
UGoIGo turn-based initiative systems really don't do a good job of modeling the synchronicity of combat actions, nor the nature of anything that takes more than a split-second to do... but they're one of the less-bad tools we have for the job.
I largely agree with Tegyrius's points. I wouldn't make it a direct save vs attack - it'd be unpassable, which makes it pointless. Just inflict the condition in that case. I'd call it like 20-30 rounds per 5ft square for proper supression. You want to supress large swathes of turf you gotta use some serious hardware - or have a team do it.
Yes, this. Suppress a doorway with a subgun? Sure. Suppress a hallway? Maybe if you're firing down its long axis. Suppress any reasonable amount of open ground? Gonna need belt feed for that.
I'm fine with free attacks against anyone who enters the area supressed - just make it anyone. Your friend is stupid enough to enter the area you're spraying with fire? Too bad for them. Same with people leaving cover - they're stupid enough to pop into the open and it's really more of an assisted suicide.
I wouldn't grant free attacks against people already in the area - as you start opening up without aimed shots they scrabble for cover and such.
My intent with that aspect of it is that I don't like the idea of someone sitting still in the middle of a suppressed area for an entire round and not being at risk
. I see three separate ways to trigger the free attack: either you're there when the suppression starts, you move into the area while it's being suppressed, or you're in the area when the suppression ends. I could key the free attacks off of 2+3, but that's more strain on the players to remember to invoke that effect a full turn (several minutes of eventful play time) after it was declared and initially resolved.
I could see scripting it as "you suffer the free attack if you remain in the suppressed area for your whole initiative count, or move into it at any point during your initiative count." But my gut check is telling me that there are some holes in there I need to examine more closely.