You basically have 28 days to object to anything that appears on the agenda as a result of the call-out on the grounds that you weren't given enough advanced notice (see below).
You're lucky – our EC just issues the agenda, there's huffing and puffing if anyone (actually, it's just me) wants to discuss anything and our AGM into a 'show and tell' where we a presented with a eries of motions to approve and the most important issue is finishing 'on time'. It's a pretty poor show for the one meeting a year where all owners get a chance to discuss anything that's bothering them.
But back to you: A polite note telling your EC they're on the right track – they don't have to invite motions or items for discussion – but if the call-out went out a week before the agenda it would be even better.
Here's the relevant section of the Act:
154 Order where voting rights denied or due notice of item of business not given
(1) An Adjudicator may order that a resolution passed at a general meeting of an owners corporation be treated as a nullity on and from the date of the order if satisfied that the resolution would not have been passed but for the fact that the applicant for the order:
(a) was improperly denied a vote on the motion for the resolution, or
(b) was not given due notice of the item of business in relation to which the resolution was passed.
(2) An application for an order under this section may not be made after 28 days after the date of the meeting at which the resolution was passed.
(3) If an order under this section is made in relation to a resolution making a by-law or amending or repealing another by-law and the order has been recorded as provided by section 209, the by-laws have force and effect on and from the date the order is so recorded to the same extent as they would have had if the resolution had not been passed.
(4) Subsection (3) is subject to the by-laws having been or being amended or repealed in accordance with this Act and to any relevant order made by a superior court.
(5) An application for an order under this section may be made only by a person entitled to vote on the motion for the resolution concerned.