I suggest more usability for the gunner and bomber classes at the beginning of the game. This game draws you into using a sword and then gives you sword upgrades. Most people wont have the CE to upgrade beyond 2* so bombing is not a rational choice as no good bombs are given and most bombs under 2* are impossible to use effectively without extreme skill. with guns again people will have to buy a alchemer and then quickly upgrade to the Mk2 versions, this is a very expensiive process and many F2P or Noobies will much prefer to stick with the easy option of swords.
My suggestion is :
1) Maybe start a Mentoring type scheme, Experienced players can choose to become a mentor maybe as a rank mission. The Mentors will then choose a language and be put up with a Noobie who speaks the same language. Here the mentor can introduce the noobie to the diffent things that the tutorial doesn't cover and maybe guide the Noobie though a training course. After the course is complete the 2 players can have some final words and maybe share some items before being returned to wherever they need to be. The mentor would receive a Special accessory and if the Noobie becomes P2P then the Mentor would recieve a small CE bonus or different prize
2) A good begginer friendly versatile bomb much like the brandish from the world of swords, which would be given for free as a reward for something and could be upgraded through many different paths. However much i would like to suggest free upgrades i will not because that would make the energy market have a spasm or something.
I get all of my energy for free from TF2 so I cannot complain
I would appreciate any Constructive criticism on these ideas an I apologise if you have already thought of this!
"This is a very expensive process"
No, not at all. You can earn all you need for a 3* item in a single day, even as 2*.