Alright, a few things here:

Some ScreenSelectStyle elements shifted in accordance with new graphics.
Positioning of stage graphics on ScreenGameplay shifted, also because of new graphics.
LifeMeterBar has one chamber, like original system zero theme.
Arrows now look like they smoothly scroll in, instead of just popping out of nowhere. (Modified in [Player], Start/StopDrawingAtPixels)

Some other stuff I may not have noted in here. Hopefully I covered everything though.

stepmania/Themes/default/metrics.ini

@@ -163,24 +163,24 @@ PremiumX=SCREEN_CENTER_X+230
 PremiumY=SCREEN_CENTER_Y-156
 PremiumOnCommand=addx,SCREEN_WIDTH*0.6;bounceend,0.5;addx,-SCREEN_WIDTH*0.6;glowshift;effectcolor1,1,1,1,0;effectcolor2,1,1,1,0.3
 PremiumOffCommand=bouncebegin,0.5;addx,SCREEN_WIDTH*0.6
-Icon1X=SCREEN_CENTER_X-260
+Icon1X=SCREEN_CENTER_X-270
-Icon1Y=SCREEN_CENTER_Y-156
+Icon1Y=SCREEN_BOTTOM-60
 Icon1OnCommand=addx,-SCREEN_WIDTH;sleep,0.20;decelerate,0.3;addx,SCREEN_WIDTH
 Icon1OffCommand=bouncebegin,0.5;zoomy,0
-Icon2X=SCREEN_CENTER_X-180
+Icon2X=SCREEN_CENTER_X-190
-Icon2Y=SCREEN_CENTER_Y-156
+Icon2Y=SCREEN_BOTTOM-60
 Icon2OnCommand=addx,-SCREEN_WIDTH;sleep,0.15;decelerate,0.3;addx,SCREEN_WIDTH
 Icon2OffCommand=bouncebegin,0.5;zoomy,0
-Icon3X=SCREEN_CENTER_X-100
+Icon3X=SCREEN_CENTER_X-110
-Icon3Y=SCREEN_CENTER_Y-156
+Icon3Y=SCREEN_BOTTOM-60
 Icon3OnCommand=addx,-SCREEN_WIDTH;sleep,0.10;decelerate,0.3;addx,SCREEN_WIDTH
 Icon3OffCommand=bouncebegin,0.5;zoomy,0
-Icon4X=SCREEN_CENTER_X-20
+Icon4X=SCREEN_CENTER_X-30
-Icon4Y=SCREEN_CENTER_Y-156
+Icon4Y=SCREEN_BOTTOM-60
 Icon4OnCommand=addx,-SCREEN_WIDTH;sleep,0.05;decelerate,0.3;addx,SCREEN_WIDTH
 Icon4OffCommand=bouncebegin,0.5;zoomy,0
-Icon5X=SCREEN_CENTER_X+60
+Icon5X=SCREEN_CENTER_X+50
-Icon5Y=SCREEN_CENTER_Y-156
+Icon5Y=SCREEN_BOTTOM-60
 Icon5OnCommand=addx,-SCREEN_WIDTH;sleep,0.00;decelerate,0.3;addx,SCREEN_WIDTH
 Icon5OffCommand=bouncebegin,0.5;zoomy,0
 Icon6X=
@@ -198,20 +198,20 @@ Icon8OffCommand=bouncebegin,0.5;zoomy,0
 IconGainFocusCommand=glowshift;effectperiod,0.5
 IconLoseFocusCommand=stopeffect
 DisabledCommand=diffuse,0.2,0.2,0.2,1
-ExplanationX=SCREEN_CENTER_X+160
+ExplanationX=SCREEN_CENTER_X+80
-ExplanationY=SCREEN_CENTER_Y-70
+ExplanationY=SCREEN_CENTER_Y-40
 ExplanationOnCommand=addx,SCREEN_WIDTH*0.6;bounceend,0.5;addx,-SCREEN_WIDTH*0.6
 ExplanationOffCommand=bouncebegin,0.5;addx,SCREEN_WIDTH*0.6
-WarningX=SCREEN_CENTER_X+160
+WarningX=SCREEN_CENTER_X+130
-WarningY=SCREEN_CENTER_Y+160
+WarningY=SCREEN_CENTER_Y+88
 WarningOnCommand=addy,-120;zoomy,0;decelerate,0.5;zoomy,1;addy,120;diffuseshift;effectcolor1,1,1,1,1;effectcolor2,0.4,0.4,0.4,1
 WarningOffCommand=accelerate,0.3;zoomy,0;y,280
-InfoX=SCREEN_CENTER_X+160
+InfoX=SCREEN_CENTER_X+80
 InfoY=SCREEN_CENTER_Y+40
 InfoOnCommand=zoomy,0;bounceend,0.5;zoomy,1
 InfoOffCommand=bouncebegin,0.5;zoomy,0
 PictureX=SCREEN_CENTER_X-160
-PictureY=SCREEN_CENTER_Y+20
+PictureY=SCREEN_CENTER_Y-20
 PictureOnCommand=diffusealpha,0;glow,1,1,1,0;linear,0.2;glow,1,1,1,1;linear,0.0;diffusealpha,1;linear,0.2;glow,1,1,1,0
 PictureOffCommand=linear,0.5;diffusealpha,0;glow,1,1,1,0
 
@@ -938,7 +938,7 @@ CombinedLifeOnCommand=addy,-100;sleep,0.5;linear,1;addy,100
 CombinedLifeOffCommand=linear,1;addy,-100
 ShowStage=not GAMESTATE:IsCourseMode()
 StageX=SCREEN_CENTER_X+0
-StageY=SCREEN_CENTER_Y-186
+StageY=SCREEN_CENTER_Y-206
 StageOnCommand=draworder,100;addy,-100;sleep,0.5;linear,1;addy,100
 StageOffCommand=linear,1;addy,-100
 StageFrameX=
@@ -2261,10 +2261,10 @@ DescOnCommand=zoom,0.5
 DescWidth=400
 
 [LifeMeterBar]
-MeterWidth=260
+MeterWidth=270
-MeterHeight=24
+MeterHeight=32
 DangerThreshold=0.2
-NumChambers=32
+NumChambers=1
 NumStrips=2
 InitialValue=0.5
 StreamNormalOnCommand=
@@ -2627,10 +2627,10 @@ ExtraColor=1.0,0.0,0.0,1.0	// red
 ExtraColorMeter=10
 
 [Background]
-LeftEdge=SCREEN_LEFT+20
+LeftEdge=SCREEN_LEFT
-TopEdge=SCREEN_TOP+20
+TopEdge=SCREEN_TOP
-RightEdge=SCREEN_RIGHT-20
+RightEdge=SCREEN_RIGHT
-BottomEdge=SCREEN_BOTTOM-20
+BottomEdge=SCREEN_BOTTOM
 BlinkDangerAll=1
 DangerAllIsOpaque=1
 BrightnessFadeCommand=
@@ -2697,7 +2697,7 @@ HoldJudgmentYStandard=-90
 HoldJudgmentYReverse=90
 BrightGhostComboThreshold=100
 StartDrawingAtPixels=-60
-StopDrawingAtPixels=350
+StopDrawingAtPixels=400
 MaxProTimingError=100
 TapJudgmentsUnderField=0
 HoldJudgmentsUnderField=0
@@ -2826,12 +2826,12 @@ TextZoom=0.5
 Uppercase=1
 
 [OptionIconRow]
-SpacingX=38
+SpacingX=32
 SpacingY=0
 
 [TransitionOniFade]
-BannerWidth=564
+BannerWidth=512
-BannerHeight=184
+BannerHeight=160
 
 [LyricDisplay]
 InCommand=shadowlength,0;diffusealpha,0;linear,0.2;diffusealpha,0.75