Here's what the Add-on says:
"Canon Character Upgrade [Galaxy Cmdr and above] $125
For those who asked, and want to guarantee higher level art/placement of their Canon Characters, subsequent repetitions of this add-on will upgrade your character to a more prominent guaranteed placement in a fiction novel, box set or sourcebook.
Your current Canon Character will already get priority placement due to your reward-rank!
Extra priority can include larger art development, upgrades to serial character, or involvement in larger storyline plots."
I don't read that as an additional character. I also don't know what it means at Star Colonel or below.
for colonel it reads as this:
Canon Character Art Add-on/Character Upgrade [Star Colonel] $125
3 per customer (3 Left)
For the Star Colonel who has a Canon Character and wants the Art Upgrade... This is it!
Your character image will be guaranteed to appear in a future BattleTech product. There is no guarantee it will appear with your Character name and stats, but we will make a reasonable effort to do so, according to the needs of the product.
(For those who asked, and want to guarantee higher level art/placement, subsequent repetitions of this add-on will upgrade your character to a more prominent guaranteed placement in a fiction novel, box set or sourcebook.)
so in general this is not an additional char addon it is an upgrade to the existing one part of either SC or GC pledge.
My read is that, at SC with one of these upgrades you will have the art and possibly the priority of the GC version without extra updates.
Additional upgrades would increase priority in both cases.
Of course it isn't clearly defined what sort of priority increase it really is, so personally I wouldn't use it for that purpose.
In the SC case it might be worth it for the art, depending on interest and how much money you are willing to spend for that.
a bit of unnecessary vagueness that might bite them later on. ;)
I'm not even sure that anyone ever asked for offering increased priority upgrades.
A simple art upgrade for the non artsy char and the still/again/for good missing char addon might have been easier.
in continuation to the above
I just checked with main pledge selection < Star Colonel, there is a third variant of the addon.
From the looks of it, it is the 200$ fresh char addon some have been missing.
Canon Character Add-on (with art) [Bloodnamed! and below]
$200
3 per customer (3 Left)
For those who did not get a Canon Character as part of their pledge level, and wish to enjoy being a part of the BattleTech Universe, this is for you!
Your character image will be guaranteed to appear in a future BattleTech product. There is no guarantee it will appear with your Character name and stats, but we will make a reasonable effort to do so, according to the needs of the product.
(For those who asked, and want to guarantee higher level art/placement, subsequent repetitions of this add-on will upgrade your character to a more prominent guaranteed placement in a fiction novel, box set or sourcebook.)
So it looks like this additional char is limited to main pledges that don't contain an own and works the same after that.
From that I would conclude there is no interest in having an addon that just adds random numbers of additional chars from CG side, which I can understand given the number they already have.
Which in turn means, that if anyone wants an actual additional char they would have to choose an additional pledge bundle of Col/GalCmd depending on the kind of char they are looking for.
PS: is here an option to quote nested quotes without having to copy the nested levels by hand? ;)