Another Subjunctive Lesson

I picked this up on Memorial Day, hence the topic. But it’s a good example of not using the subjunctive when you’re supposed to.

The “if” makes the sentence contrary to reality, so you should use the subjunctive form of the verb, “were.” If only it were this easy.

Speaking as a pedant, using a pronoun (it) is frequently bad writing, even when using a pronoun is grammatical. What would you supply in place of the “it”?