Caad8 frame worth upgrading ?

Simple question.
Is it worth upgrading some of the parts on my Caad8 currently with 10 speed Tiagra ? Is the frame good enough to warrant a higher groupset ?
Its about 3000 miles old and other than the wheels (now Zondas with GP4000s) and a new Ultegra Chain, everything else is stock. Everything currently works fine and nothing is damaged and the bike has been very well looked after
My thoughts were to look at gradually upgrading the groupset to Ultegra from the classifieds and ebay and then maybe swapping bars and seat post for carbon.
Is it worth upgrading some of the parts on my Caad8 currently with 10 speed Tiagra ? Is the frame good enough to warrant a higher groupset ?
Its about 3000 miles old and other than the wheels (now Zondas with GP4000s) and a new Ultegra Chain, everything else is stock. Everything currently works fine and nothing is damaged and the bike has been very well looked after
My thoughts were to look at gradually upgrading the groupset to Ultegra from the classifieds and ebay and then maybe swapping bars and seat post for carbon.
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cannondale caad8 tiagra 2012
Whilst mine is nearly all Ultegra, this is because I wore everything out.