Don ... I think there is some good advice in this thread ...
As for the arranger backing, while you may have been going for a more "simplistic" or 'minimalist' version, perhaps starting with a variation 1 of the style and progressing through to variation 4 would have added a little more to the arrangement without losing the 'feel' you wanted ...

I personally appreciate chas' suggestions about passing and transitional chords, I just wish he had taken it a step further and made some suggestions as to what chords to add where ... I think many of us could learn from his musical knowledge ...

The suggestions of other styles just points to the 'flexibility' and 'variety' that is available through the use of the arranger keyboard, as it allows the player to perform a song in many different styles, all suitable for the mood the player is trying to create...