DDog - this is handicap racing so separating age groups even further (i.e open / Masters) doesn't make much sense to me.
Also apart from maybe 1 300m this year, they have all been pretty close from memory and generally always are.
To really see if this is an issue (maybe you're right) I'd guess you'd have to:
a) Look at about 3 years worth of data
b) Look at the % of runners who competed that had >34m compared to those under
c) Compare the placing of those > 34m compared to those <34m
d) Look at how much those people missed out by on the win or a place
I'm sure there are lots more things to do a deeper dive into and if anyone loves stats and/or has the time the analysis would be interesting reading to say the least.
If there is a clear imbalance, I'd still argue this may be more of a job for our lovely handicapper than splitting the age groups.
(P.S Secretly happy though to lose of a few of those faster backmarkers that come wizzing past, but that might just kill all the fun)