I just hope they don't forget that Casino Royale and Quantum of Solace were intended to be the first 2 parts of a trilogy.
Unless you can provide a link backing up your claim, that was never
the case. CR was made purely as a stand-alone, Bond begins movie. Everything was pretty much resolved by the end of the film.
QoS was not a direct follow-up to CR until after CR hit and TPTB liked what they saw. Only then did they expand on the CR plot line.
QoS had its ending re-edited, intentionally so the series wouldn't be locked into having the next film be a follow-up.