You don't ask for much, do you? '-) Here I am, struggling to represent four dimensions on a flat plane -- and you request dynamic expansion, time dilation, and exponential time, as well!!
Whoeeee! Nothing like a nice challenge... ;-}
No wonder you're one of my favorite fans! :-)
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BTW, I've now found a mockup of my 3~4-D attempt, and am trying to add in representation of multiple (linear) ray/photon paths across distance|time (reaching us, at our "now"). When I get that done, I'll share it for comments before I formalize it further.
I'm so sorry. It's just wishful thinking on my part. If you'd rather stay away from those subjects, that's fine by me.
Thank you again, oh so very much dear brother in Christ, for all of your insights and encouragements!