Quite a clever idea, but it makes it impossible to use the rear service door (the only entrance the aft hold unless you use the pax doors) while using hotel mode
The FCOM 2 clearly recommends to park the Aircraft with the nose 45º right to the upwind
But wouldn't this "brake" put too much stress on the shaft if it's on for a long time
For cooling purposes you can even bring the Power Lever up to Gust lock stop and thus increasing the turbine spool to over 75% Nh to increase the bleed air distributed to the cabin and therefore improving the air conditioning throughout the cabin during Hotel Mode