could jetclock have a feature to track aircraft that are not even there?

[SSBN7736]

hi oliver, i have just discovered jetclock! and it looks STUNNING!
but, i'm curious, could a feature be added, that lets the user spot aircraft that are not even there?
say for instance this user, wants to look for a BAC-111 of ryanair flying from dublin to manchester, but since they retired in 2000 they can't find one! so they can enter some custom data, using the "Manage your clock" page, and boom! its there, over the irish sea, flying to manchester!
as well as this, sound should be added of certain aircraft, like the BAC-111s rolls royce spey engines!
i hope this can work!

[oliverrees]

Thanks for the kind words! Hmm interesting idea, but I think the data source for JetClock will always be live ADSB to avoid confusion. And on the sound, it is something I am looking at (there has been another request for it) so will keep you posted