Well, not long ago I was messing around and was trying to figure out family trees for the characters, while somewhat ignoring ages.
Here are some of my discoveries that appeared: Blurr/Grimlock (I've seen this one though), Ratchet+Prowl=Jazz, Prowl+Elita One=Firestar, Elita+Optimus=Springer&Mirage, Chromia+Ironhide=Arcee, Arcee+Jazz=Bluestreak, WreakGar+Perceptor=Wheelie, Perceptor+Wheeljack=Skyfire, Skyfire+Ratchet=FirstAid, Wheeljack+Sludge=Swoop, Blaster+Jazz=Moonracer&Bumblebee
I hope something in there inspired you... I left out the Wrecker bits 'cause I still don't know them to well, but if you want them, I will share.