Not too sure where to post this, figured I'd have the better chance in here, since it's the busiest section... so, I'm searching for an EQ plug-in that allows you to bring your whole curve up or down once you're done adjusting your parameters. Anyone knows of such an EQ?

You can lasso the nodes in the Sonitus EQ and change them as a group

DMG Audio EQuality.  http://dmgaudio.com/products_equality.php
 
And this isn't a sales pitch, exactly, but the plug-in does what you're asking and then some. It's just what I use. I'm thoroughly impressed with them.

Photosounder Spline EQ, has that function, but that's an " linear phase equalizer ", so it uses a lot of CPU.
there's an free version with 3 nodes, and a cheap full version.
http://photosounder.com/splineeq/
This EQ is best used on the Master BUS, due to it's heavy CPU load

For another EQ:
If you do not have a EQ with a Gain output, and want to raise the lvl:
Why not use the Sonalksis Free G, after the EQ.
http://www.sonalksis.com/freeg.htm

Voxengo's CurveEQ: http://www.voxengo.com/product/curveeq/

Why not just increase the gain before or after the EQ?

@scook right, but that's not really what I'm looking for... this will change the properties of my curve as I move all the nodes up or down, it doesn't keep the overall curve. also no way to keep horizontal position locked in...
 
@sharke the way I would like to do it, is use eq boosting at first to shape my tones, then once that's done, bring the overall curve down so my highest point is equal to neutral and then raise track volume, as all eqs are considerably better at cutting than boosting. would be more convenient that way, I believe, than trying to do my curve by cutting only.
 
gonna try the demos of some of these suggestions, cheers lads.

This isn't a bad way of working, but better would be to listen to what frequencies are cluttering up or muddying the tones you want, then cut them. I think your way is fine, but you may be making some very minute decisions based on boost, rather than cut, which may skew your result a bit. Trust me, I have a very hard time trying to do this the "right" way, but I'm getting better at it. 

brconflict
DMG Audio EQuality.  http://dmgaudio.com/products_equality.php
 
And this isn't a sales pitch, exactly, but the plug-in does what you're asking and then some. It's just what I use. I'm thoroughly impressed with them.

+1 for DMG Eq's.

brconflict
This isn't a bad way of working, but better would be to listen to what frequencies are cluttering up or muddying the tones you want, then cut them. I think your way is fine, but you may be making some very minute decisions based on boost, rather than cut, which may skew your result a bit. Trust me, I have a very hard time trying to do this the "right" way, but I'm getting better at it. 

I see what you mean, but I'm looking at this from a synthesis / sound design standpoint more than mixing. I'm quite fine with the prochannel eq for my track eq needs usually.