Marvel should do crossovers with ips that are tied or in the main universe.
They did a red sonja and spider-man crossover that was a follow up the marvel team up issue.
Crossovers they do do are--
Dr who
godzilla
rom
micronuts
gijoe
transformers
shogun warriors
kiss
alf
tarzan
shadow
john carter
doc savage
among others who have had ties or versions in the marvel universe.
Would love death's head to team up with dr who again or a new rom story.
Marvel is in kingdom hearts. Big hero 6 is in part 3. It's marvel.Marvel in kingdom hearts. Do it.