This deck allows you to Summon all Elemental Fusions that the 'Elemental HERO' archetype has (like Absolute Hero and Gaia), while also letting you Summon most Attributes of Masked HERO.
This deck is not meant to be the most competitive that Elemental HERO can be. It's meant to be a fun deck that can use the many Fusions that are available to the archetype. The main deck monsters allow for various combos that let you Special Summon multiple times per turn, especially when combined with the Quick-Play Spell 'Mask Change'. There's monsters that can alter ATK, destroy Spells/Traps, get you additional Special Summons and also lock out the opponent's GY.
Using Honest Neos just feels so good. Most people know about Honest, but Honest Neos has proven to not be as well known, so especially if you drew into it as opposed to searching for it (through something like Shadow Mist's effect), you can really mess up your opponent's plans.