Indeed there is, let's look into adding some more young guns, and maybe clear out some based on added criteria, to keep the list readable.. :)
Since 27-29 is sort of universal age of "leaving youth behind" for rally drivers (27 is max for ERC juniors, 28 or 29 is JWRC max age if I'm correct?) lets put the maximum age around 28 for this list. That might seem old for some but there are drivers still developing at an older age, Tom Kristensson @ 27 is an example of one, Pietarinen @ 25 another.
Any more suggestions to criteria?