I love my Mods, I think it adds to the overall experience.
My IJ has:
1)plastic protectors
2)Sideboard decals
3)120V LED strip to light up bridge and lost plastic(important 12v is not bright enough)
4)LED bulb on the mode start hole
5)Light installed under bridge to light up that area of lost plastic
6)colorDMD
7)Partially LEDd. LEds in some inserts just don't look right
8)IGT topper
9)Jackpot Mod(quite difficult with colordmd)
10)Added line out plug to the sound board for external subwoofer
11)Target decals
12)Added 4th bulb next to Y of INDY up top
13)White LED the faces in the backbox
14)Custom lights in the idol
15)Orange cliffy posts
16)Green superbands
17)Cliffy switch slot protectors
18)Propeller mod
19)Invisiglass
20)Black Back Alley Pinballs

Love my game. It will never leave, willingly.

wonbad...I just take a bulb socket and tie into the flashing illumination or general illumination under the playfield. You will have to drill a new hole under the playfield to attach the socket. Just point the bulb towards the saucer and it lights it up red. It makes it more identifiable and adds to the overall experience. I also lowered my saucer with extra nuts to get the ball to drop in better. There is no vault edition for IJ. Stern has made a vault edition(which is a re-release of a previous title) of Ironman so far. More are expected.