This is my mod list, installed/activated from first to last:
(maps, ui, misc, ai, major, balance)
PerfectWorld3
Mod List (addin)
CivWillard
InfoAddict
AgS - Resource Info Panel
Improved Notifications
Random Events
Satellites Reveal Map
Emigration
TreeGrowth
AI Equalizer
WWGD
City-State Diplomacy Mod
R.E.D. modpack
Thals Balance Mods - Combined (v 2)
EDIT:
Well, after using the above mods (and install order), the Tech Tree seems to be messed up again. First, I no longer see the correct tooltip info for the Pyramids (and a lot of other buildings/techs as well). However, I do see the new Technologies for the City-States Diplomacy Mod, so it might be that that mod has now overwritten the TechTree, even though I installed/loaded your mod last.
The worker actions now show the correct tooltips (turns in decimals, nice).
Mods that seem to work so far (I can see their respective ui panels or ingame changes):

Mod List (addin)

CivWillard

InfoAddict

AgS - Resource Info Panel

Improved Notifications

Random Events

Satellites Reveal Map

Emigration

TreeGrowth

AI Equalizer

WWGD

City-State Diplomacy Mod -
Minor issue: Messenger has spearmen unit graphics, though I had this issue before and was never able to fix it

R.E.D. modpack

Thals Balance Mods - Combined (v 2) -
Tooltips seem to be messed up, possibly CSDM compatibility issue
EDIT 2:
disabling/removing CSDM, clearing cache and starting a new game didn't fix the TechTree/Tooltup issues. Does this mean there is a different conflict, or do I need to reinstall all mods again?
EDIT 3:
If you think there might be a conflict, it's easy to check: in the Mods folder, do a search for *.* and see if there's any two lua or xml files with the same name. This usually means there's a conflict, which you can ask me about.
I think I found the bad guy here. It could be WWGD. I noticed it changes
InfoTooltipInclude.lua, the same file as the unofficial patch updates to use your new tooltip system. I did a diff view and it seems the author of WWGD made some more changes unrelated (though documented in his forum topic) to the actual purpose of the mod, so I'll go ahead and remove that file, here's to hoping this will solve the problem.
Also, I noticed 4 different
NotificationPanel.lua files in there mods: Improved Notifications, Random Events, Emigration and TreeGrowth. So there might be a conflict here, but I did notice that TreeGrowth works, so this might not be an issue after all.
Also, Improved Notification had a Lib.lua file, same as your "Seeks FRB" included mod. Since yours only
added text to the one used in IN, I removed the IN one.
Another one, InfoAddict and your "Seeks FRB" both have SaveUtils.lua, with different content and different versions at the top. Should I leave both or remove the oldest version (which is in the InfoAddict folder).
Edit 4:
It seems the above actions have solved most of the issues. I think especially WWGD was causing the tooltip issues. I managed to re-enable CSDM and those mods are now working correctly. The only issue I now noticed is the "
Improved Notifications" mod, which works only half. It does show up the options panel in the "DiploCorner" menu, but the notifications (expanded borders, growth of cities above 5) don't show up. Since I did see the TreeGrowth notifications show up before, I expect I loaded that one last and it overwrites all other
NotificationPanel.lua changes. I guess I'll go diff-check the files and combine them into one file, to see if that works but I don't think this is a "Balance - Combined" issue anymore, so everything works perfectly in your mod, thanks!