Update:
1) I have Super-clean-uninstalled both TS3 and Origin (including all the hidden Preference/Cache/Cookie/AppSupport/SavedState/etc files).
2) Mac had an update so I am now at macOS Mojave version 10.14.4
3) Made sure to download the newest origin for mac.
4) One more time installing TS3 base, superpatch it and running first. Ran Reset Origin Tool when origin claimed the download was still in progress despite being completed. (I know I don't have to run TS3 through Origin but I like knowing I can too be sure no issues of any kind - related to origin or not - have been eliminated.) After hitting 'Play' it takes about 15 seconds of blackscreen before it plays the intro and all seems good. I lower my graphics setting like visual particles and lighting/shadows just to be on the safe side (I was also looking for the skip intro option in Options panel but maybe that was mod so I move on.)
5) Quit to save settings and run again (this time without Origin, and again only 15 secs to load.) Then check the launcher to see if it can handle 1 small store content/bought item. I choose the 'Lovely Wall Mirror' cause it was the first thing I saw. I look away when it takes a few seconds for the install dialog to even pop up and when i look back up after only a minute boom - it's already installed. Sweet heavens I think I think I finally fixed my launcher.
Broken Launcher SOLUTION: (so far) Uninstall Origin completely (if you google it, it's called the 'hard way') and only if uninstalling TS3 didn't help. I guess Origin was still somehow holding data on it or it might be related to EPs speaking of..
I am going to restall and run my game after every EP up until UL. I would stop earlier but it just happens that Supernatural and UL are my favorites and I think IP is another heavy EP so I'll wait a while before I get brave enough to try adding it again. Even with my launcher fixed I'm going to turn all my s3pack into packages using Delphy's except for things like House/Worlds/Sims where I don't think it works as well? and point being is that I'm not convinced yet it was Origin causing issues so I will keep checking to see if a certain EP or too many end up 'breaking' my game before I call an official solution.
