In women's basketball, 65% of players are listed as guards, 30% are listed as forwards and only 5% are listed as centers. It is an aspirational thing where players are listed where they hope they might play in the W some day. It sounds a lot better to be a tall guard than an undersized forward. That is of course not how you field a team. It is safe to assume that on most teams, UNC included, there is a good chance that a "guard" will play the 3 and a "forward" will play the 5.
Hull, listed as a guard, can and will play the 3. She will play the 4 more than she will play the 2. Brooks will play the 3 more than the 2. Queiroz is simply not a guard. point-forward at best, but really more of an undersized 4.
Toomey may start at the 5 again. She certainly can and maybe should play the 4, but that is not the way this and most teams who want the ability to run work. I will be extremely surprised if Bofia comes in with skills to play forward on offense and defense. She is a prototypical center. But both are listed as forwards.
I don't know too much about the transfers as of yet, but I would be very surprised if Burrows at 6'2" plays most her minutes at the 2. I think the 1 & 2 are earmarked for 5'7" Kelly, 5'10" Harpring, 5'9" Clardy, and 5'10" White (assuming good health). Maybe some minutes for 6'1" Brooks as well at times.
To your point, that is a pretty average rotation in terms of height. But I don't think that is a problem. We need someone who has some chance of marking 5'7" Hidalgo, not someone who can shoot over 5'9" Mair (dook).
The bigger picture here is this team once again has elite depth, and upped the versatility. CB wants to move towards "positioners basketball." We are closer now than ever before. this is most beneficial on defense. When you have the freedom to zone, switch, hedge, drop, trap and fight through screens at any given time, that gives you a defensive versatility that stresses offenses. They have to prepare for and execute against all possibilities.