OK this is how my coach explained to me why we never did much stand up.
"The take down is such a small part of the jiu jitsu game. It is important but it is more important I teach you the other things. We worry about take downs closer to tournaments."
At our school we start in guard, on knees, and sometimes specific training. There are far too many people to start on our feet. There is open mat 6 days a week, less people, much easier to start standing up. My coaches will show takedowns, but more towards tournaments or during open mat.
Bro I have kept score in the mundials/pan ams/nationals for the ibjjf.
The problem with this is that you can't learn a takedown close to a competition and be expected to execute it properly. There are sooo many variations in what you will see the defensive player do in response to your takedown that you can't possibly teach with some reps before a competition. You have to train them all the time.
All competitors at our academy are encouraged to attend the wrestling class every week and we have open mats on the weekends where students will often work on their standup. Judo and wrestling techniques are covered in the regular BJJ yearly curriculum the same way that guard or mount is covered. We drill takedowns with no, little, or full resistance semi-regularly. That said, we start most regular sparring sessions from the ground unless big competitions are coming up. This is to prevent injury and save space and because although we believe stand-up training is imperative, we want the students to spend more time on the ground than standing - as is the norm in most matches.
I don't know how many people, or how much space you have at your gym, but starting from stand up can be extremely dangerous when you have a bunch of people rolling at the same time...whether or not you are "aware".
In BJJ you usually cover about 10 feet in order to take somebody down, multiply this by all the people in your class and see if it is still a safe option. If it is, you must have a big ass gym or very few members.
Advantages will be awarded during standing fights or on the ground if
the athlete attempts a technique with more aggressiveness and
initiative, trying takedowns , other finalizing moves during the fight. Or
showing that he dominate the fight most of the time by putting the
opponent on the defensive
it falls under this catagory
the guard itself isn't the issue, the issue is that you're put on the defensive while stand up fighting thus chose to pull guard.