ADAPT will replace 2d portraits with 3d ones on most unit frames (including the default ones).
ZMobDB gives you full-body models (or just portraits) of yourself, target, party, etc.
Some unit frame addons have 3-d portraits as part of their options.
__________________
"You'd be surprised how many people violate this simple principle every day of their lives and try to fit square pegs into round holes, ignoring the clear reality that Things Are As They Are." -Benjamin Hoff, The Tao of Pooh