Ah, I see. The quantity of the limited pledge can be changed, sure. But the pledges and their descriptions are locked in. No “IS” pledges are coming.
Just to be clear, the whole Clan thing is is a theme, a skin here. It’s cutesy. Ignore that. If you want IS only, you choose IS for the rewards. You may not like the omnimechs in the salvage boxes, but that makes the packs equitable. Even if it weren’t limited to that, they’re still blind boxes. In the higher levels, you’re doing good enough that you can throw the Clan Box and the salvage boxes in the trash if you want (if you can’t be bothered to use, trade, or sell what you don’t want), and still come out ahead. No one is being punished by this Kickstarter.