(May i request please that this thread is not turned into a 'F1 is boring and all that' as is often the case when this subject is discussed .
If your'e not interested in F1 - fine )
I think it's a good decision. DC is very knowledgeable about F1. However, I think he had a bit of a head start on others - as soon as Channel 4 gave the production contract to Whisper Films, DC as always in prime position. Whisper Films is owned by DC, Jake Humphrey and Sunil Patel (ex BBC F1 producer). It will be interesting to see who else they go for.
DC is high on my list of competent and knowledgeable sports commentators/pundits (all sports). My list is headed by Martin Brundle (to whom DC was "apprenticed" a few years back). He knows his stuff and is in touch with the latest developments (vital in F1). But as well as this he has a pleasing manner which gets his points across to the viewers without hype or sensationalism.
I like Eddie Jordan in small doses and he is an "keen amateur" drummer like me, so he can't be all bad. He also brings his experience as a team owner into play with some welcome insight when backstabbing and shenanigans are going on behind the garage doors. Be nice if he is taken on too (although I tend to watch the races on Sky now).
FI probably above all other sports needs people who know what they are talking about to commentate and give opinion. Many people could commentate on the race. But it is not only the action on the track that needs some explanation but the developments and techniques as well and that is where MB and DC score above the rest.
DC is a great choice for C4, ditto EJ, not enamoured with SP though, she's tolerable but personally I'd look for someone else. Sadly though the Sky team are a lot better, except that bimbo who's clueless, even though I do watch it on BBC (up to now) if it's on there.
DC is good - C4 would have been mad not to use him if he's available.
I've got Sky Sports (mainly for the cricket) so the F1 is available there for me as a freebie.
I do tend to watch the Sky coverage as Brundle (in particular) is excellent and the 'pottering around the pits' bits with Ted Kravitz can be amusing and/or illuminating too.
I haven't been to an F1 GP for quite a while - Moto GP is more fun and cheaper (especially abroad) - the Aragon circuit in Spain is a personal favourite.