Hey I've gotten to the point where I'm quite confident I can no revive 5.1.6 and I'm looking for tips going into 5.2. things like nodes to expect and how to prepare for them, best champions in my top 15 to bring along, and synergies with those champions/if you would only recommend that synergy if I also have a 4*+ of the other character.

Notable champions not in my top 15 are a 4* nebula, guardian, hulk buster, warlock, and a 5* she hulk