I am a believer in the "Steel is cheap and air is free" mantra and while I acknowledge that is is more complex than that, personally I would always prefer to see the larger more flexible platform be selected.
The real constraints should be through life cradle to grave cost of ownership, however politicians and the general public rarely get past the sticker, or acquisition costs.
If the new frigates are acquired after the corvettes logic would dictate that they had a new platforms using newer (as opposed to new)technology. I.e. Not the F-100 hull but maybe a Type26 , Type 45, DDG1000 based platform.
The real constraints should be through life cradle to grave cost of ownership, however politicians and the general public rarely get past the sticker, or acquisition costs.
If the new frigates are acquired after the corvettes logic would dictate that they had a new platforms using newer (as opposed to new)technology. I.e. Not the F-100 hull but maybe a Type26 , Type 45, DDG1000 based platform.