Mate you have this soooo backwards
Admittedly Subie have finally got rid of the glass driveline but still not a patch on the Evo gear. Evo tech pips the WRX too, with 'smart' diffs and yaw control etc etc. The Sti has only recently had the variable torque split in and that about as far as it goes.
The new DSG is weapon fast and yes the ride appears to have softened but it's still quicker.
Mod for mod, the Evo just gets further ahead. just turn up to any track day or targa and it's 10:1 Evos to WRXs.
Looks wise the Evo has always had it over the WRX as wel
Like you, i'd still have a decent Sti but the WRX, while being good, will always be the bridesmaid to the mighty Evo