Hello all here is a suggestion for what I believe to be an improvement to the current accelerometer options available:

http://postimg.org/image/kzs725s6z/

Although the photo displays a phone the same would apply to tablets.

Portrait mode ( even though the game will not be played in this mode, its rather for reference )

Vals 0 = Roll
Vals 1 = Pitch
Vals 2 = Turn Left, Right

Landscape mode

Vals 0 = Roll
Vals 1 = Turn Left, Right
Vals 2 = Pitch

All but one of those are already configurable with the DroidButtons plugin. That doesn't negate the big question of why the default UI doesn't already support this though.

Add fully customizable accelerometer tilt axes.

Come on, Incarnate, why has something so simple taken so long to implement ( http://www.vendetta-online.com/x/msgboard/7/24736 )

EDIT:
I haven't tested it yet, but some new information leads me to believe that the 3rd tilt may actually be configurable.