Describe the feature you have in mind.

If palyer is equipping elytra and jetpack,after holding space key to fly upwards in the mid-air,the next space key will activate the elytra flying.It is strange because player can not simply fly upwards again after stay in the mid-air for some time,I suggest only the double space key in the short time can activate the elytra flying in the hover mode,jusrt as how player start vanilla elytra-firework takeoff.(Maybe I am carelessly overlooked some existing methods that can solve this inconvenience)

Does this solve a particular problem?

No response