wouldn't it be that if the Bayern Munich vs Union Berlin match had not been postponed the situation would have been different?
I fully support your opinion about Leverkusen, it would be fine if they broke Bayern Munich dominance and it would be more interesting in the bundesliga, it's not boring to see every season Bayern Munich always dominates the bundesliga, but I slightly disagree with your opinion about Harry Kane superstitious curse because of the fact that he still scored in large numbers and is also just below Leverkusen, only 4 points different and if the match against Union Berlin is not postponed I am sure it will only have a 1 point difference.
and if we talk about trophies I'm sure we all know Bayern Munich current goal is to get the title in the UCL and that is Kane and his team's current target to prove to the whole world that the curse or whatever is just a myth.
Leverkusen have been able to keep up with wins and maintaining their position on the league table even though the trophy isn't certain to rest with them, their consistency at this time works the magic because it is clearly a sign that they're a better side to hold the trophy this season. I personally do not think they'll suddenly and gradually draw back in performance which would cause them to backslide in the table. Alonso would be very mindful not to trade his chances with the team.
Their main rival Munich currently are flunctuating in performance, after not being able to confidently win their last two group games, it's kept them points away from the first place. We don't know how tough the next league game would be for them but it's very much likely that they'd want to make amends for their last errors.The second half of the season is still there for these teams to do their exploits. Hopefully the winner would be very much certain before the season rounds up.