Looking for some BUILDERS to teach / guide me

i just get a booting e-1.17-r-20231106-CUSTOM_MINI-serranoltexx.zip build that i think already better for average users :
including SMS and Browser, (F-droid and AuroraStore in place of Applounge for now),
but still not including Advanced-Privacy for now.

what could be the consequences if those /e/ prebuilt apks are added by average users, after the /e/OS install ?
not signed ? not in /system/priv-app ?

edit : also not in /system/app ?

.

also @petefoth @tcecyk @aibd