Using the imperfect subjunctive in Spanish with impersonal expressions in the conditional (Sería+adjective+que)

Look at these examples of impersonal statements using the Modo subjuntivo:

These sentences express an impersonal statement in the first part of each sentence:

• conditional of ser (sería)
• followed by an adjective (bueno, genial, aconsejable)

The subordinate clause after "que" expresses a hypothetical idea set in the future using: 

• El Pretérito Imperfecto Subjuntivo (estudiara, tocara, dejáramos)

Remember:

It would be incorrect to use any tense in the indicative, for example:

See also Using the Spanish subjunctive with impersonal expressions, Conjugate Spanish verbs in the Spanish imperfect subjunctive tense (El Imperfecto de Subjuntivo) and The conditional simple + que + the imperfect subjunctive in Spanish (wish, advice, feelings)