So search engine would be able to not only check age and SL, but could also tell which teams have 3 or 4 GK's as well !!!!!!!!!
Afterall, no team is going to sell a GK if they only have 2 on their roster.
I think if we are realistic, in order to find a spare back-up GK, you are going to have to scroll thru maybe a dozen roster squad of teams.
I genuinely cannot see a big benefit in this proposed feature. What is purpose in searching for e.g. SL25+ players, as 99% are not going to be for sale, and those that are will be on Trade List!