An analysis was conducted by the CBO suggesting various
alternatives for USAF force structure. It has interesting facts on
mission profiles of various a/c that may enter RSAF inventory.
http://www.cbo.gov/doc.cfm?index=10113&type=1
Blogpost from Aviation week (Graham Warwick) on the subject.
http://www.aviationweek.com/aw/blogs/defense/index.jsp?plckController=Blog&plckBlogPage=BlogViewPost&newspaperUserId=27ec4a53-dcc8-42d0-bd3a-01329aef79a7&plckPostId=Blog%3a27ec4a53-dcc8-42d0-bd3a-01329aef79a7Post%3a7d97b92c-cbe6-47e5-a2c3-2b5070f8d4d4&plckScript=blogScript&plckElementId=blogDest
What the report
doesn't say
(a) F-35A will not be able to carry 2000lb LGBs internally (ie
only 2000lb JDAMs and Mk-84s).
(b) 2000lbs munitions usage are significantly less than 500-1000
lbs use (<7.5% of total munitions use in Desert Storm was
2000lbs munitions. Of that ~33% were 2000lb LGBs.)
(c) SDBs may replicate some 2000lb munition missions (almost
same penetration capabilities).
Conclusion
If similar study conducted for RSAF, it is likely that
RSAF, like the USAF, will likely have significantly greater
combat effectiveness when the F-35 is introduced. F-15SG has
better large munition delivery rates vs F-35. Any variant
of F-35 will be better than the legacy aircraft it replaces eg F-5
and F-16C/Ds.
It would be, however, interesting to see how armed UAVs eg
MQ-1/5/9s can impact SG's force structure.