I would suggest : Wellments of Attitude
as a wordplay on "ailments".
Given as the purpose of the lecture is to highlight several "dispositions of the mind" ( indifference, indecision, doubt, overcaution, complaining ), so to speak, to which the mind of most individuals falls prey, preventing them from self-fulfilment, it seems only right ...
If you want to be more alliterative (it sounds more like "diseases"), how about Successes of Attitude? Plus I think more apt for the video in question, which gives a laundry list of attitudes to avoid (indifference, pessimism, etc.).
How about upsides or benefits or advantages? From Lexico:
upside: The positive or favorable aspect of something.
benefit: An advantage or profit gained from something.
advantage: A favorable or desirable circumstance or feature; a benefit.
Your "diseases of attitude" focuses on the negative aspects of attitude. Upsides of attitude, benefits of ...
How about absorb? From M-W:
absorb: to take in and make part of an existent whole
Your example sentence:
Another way to broaden possible adoption and impact is to work on problems or solutions that cross the boundaries of unaligned or competing theories and methods by operating at a different level, by transcending or absorbing them.
Subsume is the word.
I'm with @RegDwigнt on how bad this sentence is, or is trying to be. However I cannot resist a challenge.
The word you are looking for is Subsume, (not far from subtend). While transcend means to rise above and away from, subsume means to take on or integrate the item with itself. Quite the other end of the scale.
"Alternative [or 'alt']," "unique," "own," and many synonyms (and related words) of these are all applicable.
"Alternative" (which you used in your question) is defined as:
Relating to behavior that is considered unconventional and is often seen as a challenge to traditional norms. [Lexico]
"Unique" is ...