OK, here's a rock solid reason why Bond is better suited to continue and Indiana Jones isn't: Bond is always meant to be a contemporary spy thriller, and with ever-shifting geopolitics that allows for a lot of potential premises, scenarios, and reinventions.

By contrast, Indiana Jones is a series that clearly is out of its depth divorced from the 1930s; a period the series fits like a glove. More importantly, Indiana Jones is a series featuring the quest for historically based religious artefacts (let's forget that silly dial for a moment) that turn out to have genuine supernatural power based on the religion in question. There are only a few of these that work really well, with the Ark of the Covenant sitting head, shoulders, and torso above the rest as Best MacGuffin ever. Anything else you come up with after that is instant law of diminishing returns. Indiana Jones has never been a straightforward treasure hunt, and this key fantastical element has always made it that bit extra special. The Bond series has never had to deal with this complication.

For those reasons, I think the two series are not comparable, and I therefore think enough is enough with Indiana Jones.