Staff Search - filter by Preferred Formation

I like my assistant to use his own tactics with Reserves and Youth teams and when I'm on holiday, so I search for an assistant who likes to play a similar formation to mine and 'filter by Preferred Formation' option would make the search for a new assistant a lot easier.

My current assistant plays 4-1-4-1 (which is what I myself use) and it's a bit tricky to find a replacement for him because most play 4-4-2 and I have to click through tons of staff to find someone with a 4-1-4-1 Preferred Formation.

The data is already there, all I need now is the option to filter it.

(I know that I can tell him what formations to use, but thats not the point here)

Why not just tell him to use current match tactics?

dont usually work or they change it at half time