Lets not forget that Flybe have potentially ordered up to 140 of these machines. It is quite possible that future deliveries could have the specification altered if required, indeed, they have the option to convert any options and purchase rights to any of the E-Jet family as required.
The main priority for these aircraft so far appears to match route capacity to demand, as with ABZ/INV to LGW and to also offer a more competitive product on some of the longer European business city routes MAN/BHX to DUS & CDG etc. where often LH/SN/AF are also using jet equipment.
The de-rated engines with their lower burn are allowing the E75 to compete so effectively against the Q400 economics and I am sure they will present a better product and impression to passengers. However, perhaps the most significant advantage is the impressive E-Jet reliability meaning an end to to rather childish and tiresome Fly(may)be as used by some on this forum.
