Taking another cue from the laptop world you could run heat pipes from back face to front face around the edges of the laptop, so heat could radiate from the front instead of all going into the TV.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8