1. Next war target? Should I war in TS?
I think that you've made a good suggestion here. Mansa still has Medieval units and has a number of resources that it'd be nice to get our hands on. We are terribly out of position, and it will currently take seven turns for our western stack to make its way over to an invasion-ready position. As noted before, we have a lot of high quality attack troops acting as city garrisons, and we should work on freeing these guys up.
With that said - would 'roughly' 20 of our Rifles and Cannons be sufficient to take Mali without the need of the Debre Berhan stack? My guess is 'yes'. Lymond might have a better feel on this, having just managed the Persian invasion.
Thebes would make a nice 'scalp', but I can live without taking on Hatshepsut-Saladin.
So, I think that it's your call if you need the Debre Berhan stack or not, but I'm supportive of your proposal to take on Mali.
Of course, we don't need to war any more, and can found two cities within our own empire, but I think killing off Mansa would give us more Corporation resources at relatively little risk.
2.in terms of city builds
Aksum, Lalibela, and Addis Ababa should be 'special cases' on the understanding that these will be our Legendary cities. Obviously Wall Street and initial Corporate Executives to come out of Lalibela, but I'd be pretty single minded on getting out cultural buildings in these three - especially; Stupas, Cathedrals, Mandirs, and Pagodas wherever possible.
We need a Taoist Monastery in Gordium and/or Darish Kabir before we obsolete Monasteries, otherwise Taoism will be lost to us as a fourth religion unless we live in Organised Religion (which is possibly our best move anyway). We have more than nine cities with Hinduism and Buddhism, so there's no real need to build Hindu or Buddhist Missionaries for the purposes of getting the three Stupas and Mandirs up, but we do need Buddhism spread to Lalibela, and Hinduism into Addis Ababa.
Otherwise, it's pretty much your call on other buildings. Courthouses aren't present in Bactra and Persepolis, but otherwise this major concern is covered. Christian Temple builds is the other, although there's no great urgency for these particularly, as we're still a long way from finishing the game - albeit these are pretty handy buildings anyway.
3. corps
'Yes' - start with spreading to Aksum and Addis Ababa. Then probably Qohaito and Gondar given their high productivity and therefore speed at pumping out Corporate Exec's.
4. techs
I'm happy to support your pathway.
5. civics
While we can draft Infantry, I would just leverage this rare 'window of opportunity' to do so for a handful of turns still. Personally I'd go into the Caste System too, but that might be one to hang on to for a Golden Age (to pop out that Civilized Jewelers Great Artist): Aksum's got quite a few passive points with a big lean toward Great Artist, so it could possibly come from there, with the Globe Theatre Hawulti can run five Artists, so that could be an option for this baby-

farm, if not 'old faithful' Addis Ababa. I'm not sure if we'd be looking to seek out Great Artists for culture bombs or not.
6.whips
I can see you doing a lot of whips too!
As per above, I'd think about the Caste System, but I'm mindful of your penchant for Slavery.
7. workers
Railroads would be good - hopefully we'll pop some Oil seeing that we 'lucked out' with Coal. I guess it depends what happens with Mali's Coal deposits.
8. tech trades
You're welcome to trade Rifling for Scientific Method and Astronomy with Mehmed and Shaka if you want to as far as I'm concerned.
I hope this isn't all too contradictory with the rest of the roster!
