I think it was implied [although not clearly] that they [klingons] just couldn't figure out the ship systems. Which seems far fetched.

1 They obviously got the ship from one point to another after capturing the crew.

2 If a crew if miners could get the thing running, surely the boys down in Klingon R&D could figure it out.

IIRC in the comics they had a simple mining ship retrofitted with advanced [confiscated] BORG technology.

Without dismantling it for future weapons tech... ok, maybe it was a good decision to cut those scenes.

yeah...But they DID try to seduce Nero into sharing up his future knowledge to use against their enemies...

Other than that I did like the Klingon scenes - I guess with all deleted scenes they were cut with reason. Who knows - they may elaborate on it in the upcoming movie comic adaptation - or the current 'Nero' focused series?