Hypothetical senario

[Necromancer]

The only things that would've made the 'Express more successful are same things that would've helped the TG-16/CD - a better software library, lowered cost, better marketing, and a better software library (it bears repeating).  Its screen was superior and its hardware robust, but it was at a severe disadvantage to the Lynx/Game Gear/GameBoy on price, games, availability, and battery life.

It's a piece that just wasn't thought out very well -- no option for batteries...

Agreed, especially since they made a battery pack for the frickin' Duo.

[Sinistron]

Completely agree with Necro.  NEC's success or lack of really didn't have anything to do with hardware- it was the software- the games they chose to import and develop for the American market.  So- if it was just the Turbo Express that came out- you'd have the same result.  Fizzle.