Support :Leaderboard Filtering

Seen quite a few requests to support being able to see gender based Leaderboards .
I voted for them as I can see the value .

However I would like to propose going further and supporting Leaderboard filtering .

So you could filter by many things , a few of many suggestions might be

Age Group
Friends List
ZwiftPower Category
Zpower riders removed

It would make Leaderboards more engaging I think and more rewarding for those who seldom get the buzz of being on a podium/top rung .

(not suggesting making jerseys different from now ( except maybe fixing them as they are broken big time) but just allowing listing filters) .