Confused with verbs

Can i say: It is essential that we be informed of your plans. Yes!

Help him understand - Ok
It is essential that we should be informed of your plans.
We insist that he must be on time

There are those who use modal in subjunctive which in my opinion is improper but some considered it acceptable. I wouldn't not recommend it.

Anewcomer wrote:

Sorry, but in my previous question, I asked whether I can say : It is essential that we are informed of your plans. Is it correct? or should i use "be" instead of "are" for "we"

If you want the person to let you know what his plans are, say: It is essential that we be informed of your plans.

I think you're right. I think subjunctive is a mood.

Why is it correct to not use the subjunctive?

Grammar Geek wrote:

Why is it correct to not use the subjunctive?

Hi GG,

Perhaps I spoke too soon (again).  I can't find the reference I wanted, but this one is amusing:

W. Somerset Maugham said that “The subjunctive mood is in its death throes, and the best thing to do is to put it out of its misery as soon as possible”. An alternative view is that the subjunctive mood remains an ordinary working feature of English grammar, but that it is called moribund because it is often indistinguishable from the ordinary present indicative.

  - A.

Edit.  Can't find it.  They say it's acceptable to replace "if I were" with "if I was" in most registers, but other uses persist.