Player cards can have chemistry styles applied to them, boosting different sets of skills. These chemistry style changes do make a big difference, with players performing noticeably better than they would if they were using the Basic archetype. The best central midfielders in FC 25 Coins will be boosted further with chemistry styles.
Check a player's stats and use that to gauge which chemistry style to use. Players can either use these cards to buff a set of weaker stats and lead to a better all-round card, or further buff stats that are already high for a more overpowering feel.
Overpowered teams are not exactly few-and-far-between. It's a bit of a grind in the beginning to get a decent team, but after a month or two the market settles and overpowered teams are everywhere. Players should use the FC 25 Ultimate Teambin website to find a cheap team for 10-20k, grind for that amount of coins at the beginning and then coast with that team while earning coins throughout the year and making new teams.
YouTube is also a great resource for finding teams that are currently cheap to put together. Players should remember to filter the search results to videos that were posted 'Last week' to ensure they are finding videos that are up-to-date on Ultimate Team's meta. Even having the best LW and RW in FC 25 will improve a gamer's goal-to-game ratio and help them out in the early game.
Squad Building Challenges (SBCs) are pretty much just a coinsink. Gamers are expected to create teams according to a list of prerequisites, before submitting it and losing it in exchange for rewards. The problem is, other cheap Fut Coins gamers choke the market out and make it so that gamers have to overpay for players simply to fulfill the SBC.