Bench is more important than the starting XI? That is a new one on me.
The composition of your bench is probably more important over the course of the season than a single position in your starting XI. That is what I wrote and I believe that to be true.
Right oh. Well I am going to suggest something that for some reason seems revolutionary and that is sign some defenders to improve our defence.
Last 4 seasons we have been objectively really bad. Finishing 10th, 9th, 4th and 9th; GD of -18, -6, +10 and -20 over the past 4 seasons - it doesn't make great reading!! 180 goals conceded in 108 games for 122 points (source; Wikipedia).
After season 2013/2014 the Nix finished 9th with a -6 goal difference. The next season they signed exactly ONE defender who only played less than a third of the season and the team finished with a +10 goal difference. The main difference? Depth and capability on the bench.
Hmm, or perhaps we signed 2 of the best 3 players to ever play for the club (Burns and Bonevacia)