Is there any reason in 1.8 to westernize as them? Will it give me any long term advantage besides lowering technology costs?
Also each idea you take give you -2% (might also be -1%, dont remember exactly) in the corresponding tech, so for example a full trade idea group will also give you -14% dip tech.- Low piety, -10% at minimum.
- Western Arms Trade, -10%
- Islamic Centre of Scholarly Learning, -5%, requires 5+ dip leader.
- University, -5%
- Completing Administrative, Aristocratic, and Diplomatic Ideas, -10% in Admin, Mil, and Dip tech respectively.
- Innovative Ideas, -5% (I wouldn't recommend taking Innovative just for this paltry bonus. The main reason I find myself taking it is for the Army Tradition decay reduction, which, as the Ottomans, who can expand on several fronts at once and fight wars almost constantly, shouldn't be a problem.)
These are all the ones I can think of right now, but there are probably a few more.