Yes, bring on network-wide allocated seating!!
I love everything about EZY...apart from their seating policy. I'm over 6ft in height, and I really struggle to sit (comfortably) in a standard seat for 4/5 hours. Given that I fly to PFO 3/4 times a year, booking extra legroom is a must.
Currently I fly Jet2/TCX from GLA, however, I'd be more than willing to travel through to EDI (or indeed MAN, BRS, LON depending on cost) if I can pre-book extra legroom seats on EZY.
Nobody likes a stressful airport experience. Sounds pathetic I know, but when I fly EZY, I'm always paranoid about being at the front of the SB queue and hell bent on getting to the overwing exit seats!! The amount of fights I've almost got into!
Knowing exactly where I'm sitting on a flight, makes my time passing through the airport all the more relaxing. Like I said, EZY are (imo) perfect in almost every single way...just the seating policy, which will hopefully change!
