I think we have to look at this on a "wider scale" ...
TK is clearly focused on expanding in SE Asia. So, additional destinations have to be expected
Next to this i know that TK is intensively working on serving Manila via BKK !
(although they already stated said they would probably go non-stop IST-MNL if traffic rights between BKK and MNL are not granted ! )
The Philippine Government is opposing to TK´s IST-BKK-MNL planned routing !
(opposing to almost any foreign airlines´s plans except the arabian ones
- For whatever is the reason ...)
Maybe TK is considering IST-KUL-MNL instead as a back-up alternative ???
The fact that MH serves KUL-IST vv. thrice weekly is not much of importance regarding a code-share agreement !
I think here comes into play that MH is not member of any alliance but TK is Star member ...
TK is trying to strengthen their own SE Asian and Star Alliance´s presence at the same time !
So, a code sharing MH/TK on that route probably doesn´t fit into Star Alliance´s plans - in particuar if TK may consider a tag-on to MNL which generates sufficient through traffic !!!
Edited by Juergen Witte, 10 April 2010 - 01:59 PM.