My problem with F2P is it just effects the game design in almost ever aspect. Yes there are some games that are F2P that do it right, but for the most part they remain the exception and not the role.
Now the developer has to design a game where the player must depart with his/her hard earned cash just to buy energy to continue in the game, or perhaps they might up the difficulty spike randomly because they really do not want you getting through the game without needing some "help" etc there are a lot of issue with F2P games that do not appear in games that are designed with a one price entry fee.
Furthermore in regards to the game content itself, developers will not have the same level of financial return from the same period a retail game would have. This forces them to break the game down into episodes rather than one major entry that can stand on it's own.
The game did have me excited but SEGA has to prove to me this is more like PSO2 and not like Kingdom Conquest 2.