These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Productions that want the play to have a real happy ending try hard to make Bertram come across as a likable but callow youth who needs to learn some valuable lessons in life rather than a shallow Jerkass who clearly isn't good enough for Helena, usually by casting a really, really handsome and charismatic actor in his role, and playing up Parolles as a bad influence. It doesn't always work.
Since Helena's determined affection for a total loser with no redeeming qualities who hates her guts is so inexplicable, there's also some debate on whether to portray her as the nice, sensible if lovestruck girl she mostly seems to be, or as some kind of slightly unhinged Love Freak or Yandere.
Bertram's seemingly Irrational Hatred for Helena may be resentment for being arbitrarily banned from his ambitions in order to get married instead, since in the beginning of the play he was just politely ignoring her. Even then, taking a dislike in her wouldn't have been completelybaseless.
Esoteric Happy Ending: The play seems to be a comedy, so some commentators have argued that the finale — where the lovely, sweet and clever Helena has succeeded in marrying Bertram, an utter tool who hated her guts for most of the play — must have been intended to be seen as happy. Somehow.
Lampshaded, in some productions, by the way one of the King's final lines is delivered: