dont worry it will get better. grinding and jerking almost 100% gone after 2k++

you can still feel the DCT shifting though, but hey, thats the characteristic 
totally agreed!

1400km, lotsa grinding/jerking from 30km/h to 40km/h

Yes, Sime Darby at PJ branch only has the hatchback for test drive. When asked about the Titanium, they just mention they don't have it for test drive and the Titanium sedan drives like the Hatchback sedan. Anyway the sedan is not easily available for test drive. Only limited branches have it I guess. In my limited short test-drive experience, I definitely think the handling and driving feel is different between the Hatchback and Sedan.

Spare parts cost, I think we can be prepared to fork out more than Japanese after the 3 years free maintenance is not applicable anymore. The normal wear and tear items such as brake pads, engine mounting, shock absorbers etc. those I expect or suspect will be almost double the cost of equivalent Japanese makes.