HUD is dependent on the car really. Trying to sell a f80 m3 without it is difficult it seems rarer on 340i so not as much of a issue. It also can’t be retrofitted at a sensible cost. New dash, front screen etc, so I would never buy a m3 without hud.
BMW are my fav brand. Residuals are awful on new cars though due to the crazy discounts they offer. So many f80 M3 owners have lost a fortune are are in negative equity in a big way.
I would say laser lights and individual leather are more bling fashion accessories than a MPE? The MPE is also not the best quality (m5/6 made by akra excluded) and aftermarket options are much better. The best being Akrapovic.
Everyone is different but to me the Akra is the coolest option you can spec. Not really bling because only real car people appreciate it for what it is. 99% of joe public probably think it’s a halford special or that the exhaust is broken