Mi è sembrato ovvio che il piano aveva bisogno di qualche revisione.

[morbrorper]

English Translation

It seemed obvious to me that the plan needed a few revisions.

I’m a bit surprised that it’s not avesse; it’s still a personal opinion.

[Floria7]

Hi, I think because the need to revise the plan was *obvious, not up for discussion.

A dopo…

[mike-lima]

Yes, aveva does not sound right.

If the sentence started with “E’ ovvio che…” then the imperfect is acceptable.

But adding “sembrare” makes it hypothetical, so the subjunctive mood is needed.

[Floria7]

Thank you @mike-lima. All help is appreciated.