How did you know that I was lurking this thread?
Actually all of us boys in DFW, where we fly both the -88's and 90's LOVE the MD-90. In a lot of ways, it makes the -88 seem like a C-150.
It's actually a much better plane than the -88 in many many ways, especially the FADEC system and APU. Sorry Acvitale, I didn't mean to blatantly disagree but the -90 is a fantastic airplane.
The -90 got a lot of things right that MD didn't inititally get right on the -88 in terms of automation, engines and the IFE systems but there were two problems in the design of the MD-90.
1. Delta - Management wanted a plane that was far superior to the -88 but similar enough to be integrated within the -88 fleet. Talk about the adage of trying to stuff 10 lbs of sand into a 5 lbs bag. Plus, we tried to treat the MD-88 as a DC-90-30 with EFIS both training-wise and maintenance-wise which didn't (and doesn't) work. With the -90, they treated it just like an EFIS DC-9-30 with an IAE V2500 engine retrofit. Baaaaad.
2. McDonnell Douglas - So eager to build a new airplane with no resources to correct the primary thing wrong with the MD-88. *the wing*. Often we have to fly the -90 at 255 KIAS below 10,000 feet because of the exteme lengths of the fuselage with a basic DC-9 wing. Rumor has it that the wing is straight off of a DC-9 (not the -10 of course) and MD didn't have the resources to redesign the wing to properly support the -88 and especially the larger -90.
There's my $0.02!