Have any of you noticed if the probability on obtaining a permanent unlock is greater the more packs you open consecutively. Saving req points to open all at one time rather than one at a time?
No, not for me. It is usually right on par for every pack I open. Mainly open silver packs and 2 are always permanent. I will say the more you open the better your chances of getting that new item you haven’t received yet improve though just because you have less of a “pool” to choose from. Still waiting on opening my “Security” helm.
I’m just grinding through the -Yoink- common crap first, then on to silver packs for uncommon and rare. Then I can cheer as I get Ultra rare -Yoink- from gold packs 
Thanks for the advice. Looks like I will be starting with Bronze.