therefore the more substitutions you have, the weaker the team on the pitch
ignoring fatigue (i.e. a fresh 70 is better than a tired 80), one reason for substitions is to adapt playing style based on how the match has gone. Bigger clubs clearly have an advantage therefore since they can have different types of player, who are all very good at what they do.
I think more subs changes things quite a lot, and it'll take a bit of time to see. Personally if I were Everton head coach I would be thinking of:
- What's my best starting XI against weaker teams at home
- What's my best starting XI against stronger teams away
- What's my best finishing XI if 1-1 and I want a draw
- What's my best finishing XI if 0-1 and we need a win
Clearly you want have the same XI in all of those, and then just use substitutes based on fatigue. I'd even keep Richarlison on the bench away to physical teams, and bring him on second half when there's more space on the pitch and their defenders are already on yellow cards. i'd have Yerry Mina as an impact sub to clear balls when we'd hanging on. Bernard is my go to no. 10 if it's a tight game and we need some magic. Having a bigger squad, with better players, would mean that more substitutions would help.