I think the system of energy should be removed entirely. Now before you label me as an insane type and disregard this entire message, I'd like for you to at least hear me out.
Good; you're still reading. This will be rather lengthy. If you wish, you may skim (NOT skip) the first paragraph and move on to the second.
I understand perfectly well that players buying crystal energy is the primary (if not only) form of income for the developers of this game. Without it, there would likely be no Spiral Knights to begin with. However, it has come to my attention countless times that the energy system is much too restricting. I am very well aware that the purchase of crystal energy is very affordable, and I do praise it for being so. However, what appears to be the target audience of the game is composed mainly of adolescent and prepubescent players, who must go to their parents to authorize purchase. In today's economy, very few parents will be so willing to spend money on a simple game, and I have met very few players who have bought crystal energy with real money. Whether this is because many parents do not approve or simply coincidence beyond my knowledge. Nonetheless, I have a suggestion that may work for all of us.
Spiral Knights currently has at least one million accounts, many of which are very active. Therefore, the Spiral Knights universe is the perfect place to put advertising, thus generating income for the developers in place of the system of energy, which has made me consider stop playing altogether simply because of its limiting nature. Once again, hear me out. These advertisements can be integrated seamlessly into the game world. Players may see a banner advertising a food product while waiting for a level to load, for instance. Perhaps you can place a few ads on the screens (such as those at the auction house) found in the game that have no non-aesthetic use. Or, even better, add a feature that rewards a player in crowns for watching video advertisements, something I have seen incorporated very well on other websites. I must warn, however, that you not make these advertisements any more intrusive than they must be. I understand that advertisements may be considered intrusive by nature, but do not allow them to be unacceptably so. For example, I once encountered a website that offered games, but forced players to watch a video advertisement before starting one. I stopped using the website entirely because of this, and I imagine that many other users did the same. Such advertising feels like an irritating interruption to the players, rather than an acceptable form of income. I have given my thoughts, and will let you decide which method is best.
I believe I have offered an acceptable justification to my suggestion and an alternative course of action. I hope you will take my thoughts into consideration. Feel free to contact me through in-game mail or the email address I provided when making this account.
And who is going to pay for this advertising, again? One of the big reasons that the dot-com bubble burst a decade ago was that advertisers figured out that spending a bunch of money to advertise on sites that cater primarily to people unwilling to pay didn't offer a good return on investment unless you're paying very, very little per ad view.