midiChords is such an amazing and useful plugin. I have added a bunch of chord shapes, mostly open voicings. Hopefully others will find them useful.

Using any text editor, copy and paste the following into the "midiChords/chords/User.txt" file. With that done, the new chord shapes will show up when you click on the "Menu" button in the plugin.
; -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1  2 3  4 5 6  7 8  9 10 11 12
;   C  C#   D D#  E  F F#  G G#  A A#  B C C# D D# E F F# G G# A A#  B  C

# Root fifth octave
Type 1: 0 7 12
Type 2: -12 -5 0
Type 3: -5 0 12
Type 4: -12 0 7

# Major triad inversions
1st inversion: -8 -5 0
2nd inversion: -5 0 4

# Minor triad inversions
1st inversion: -9 -5 0
2nd inversion: -5 0 3

# Open major triad
Type 1: -12 -5 4 12
Type 2: -12 -5 0 4
Type 3: -12 -5 4 7

# Open minor triad
Type 1: -12 -5 3 12
Type 2: -12 -5 0 3
Type 3: -12 -5 3 7

# Open dom 7 triad
Type 1: -12 -5 4 10
Type 2: -12 -2 4 12
Type 3: -12 -5 -2 4

# Open major 7
Type 1: -12 -1 4 7
Type 2: -12 -5 4 11
Type 3: -12 -1 4 12
Type 4: -12 -5 -1 4
Phat: -12 -5 4 11 14

# Open minor 7
Type 1: -12 -2 3 7
Type 2: -12 -5 3 10
Type 3: -12 -2 3 12
Type 4: -12 -5 -2 3
Phat: -12 -5 3 10 14

# Open dominant 7
Type 1: -12 -2 4 7
Type 2: -12 -5 4 10
Type 3: -12 -2 4 12
Type 4: -12 -5 -2 4
Phat: -12 -5 4 10 14

# Rootless major 7
; Type 1: C major 7:  E   B   D  G
; Type 2: C major 7:  B   E   G  D
Type 1: -8 -1 2 7
Type 2: -1 4 7 14

# Rootless minor 7
; Type 1: C minor 7:  Eb  Bb  D  G
; Type 2: C minor 7:  Bb  Eb  G  D
Type 1: -9 -2 2 7
Type 2: -1 4 7 14

# Rootless dominant 7
; Type 1: C7:  E   Bb  D  A
; Type 2: C7:  Bb  E   A  D
Type 1: -8 -2 2 9
Type 2: -2 4 9 14