Your style took the PL by surprise early this season, now every manager knows how you play and will have reams of data and stats on the best way of countering it.
You’ve done well for a newly promoted side, very well on occasion. Bamford (amongst others) has exceeded most peoples expectations outside of Leeds, me included.
Whether you improve or not next season will depend on numerous factors, but primarily whether you improve the quality of the squad, and the existing members of it produce at the same level again next season. There’s no guarantee of either of those things happening by default. You take this league lightly at your peril and the assumption that you’ll build on where you end up without question is naive imo.