New form of matter may lie just beyond the periodic table The similar quark matter participates on cold fusion - but I doubt it will be researched just because of it. It requires heavily entangled collinear collisions of atom nuclei. A famous Hungarian boson may be also indication of this scenario, as it occurs inside elongated atom nuclei. BTW similar mechanism can be responsible for dense forms of hydrogen and also ball lightning at the Rydberg orbital level. Again, these stuffs cannot exist within normal spherical form and objects.
Other than that, the Island of stability is just job evasion of physicists: it doesn't exist - or better to say, it has been already explored and found very flat/shallow. The only interesting things currently happen in cold fusion research, which is boycotted by mainstream from ideological reasons (the parasites fear the competition and the lost of comfortable jobs).