Having arena on the frontpage will have more positive impact than tucking it away in order to clean said frontpage up. Cross-community interaction is vital to arena roleplaying, moreso than to other roleplaying categories and moreso now than ever before, i belive. Having the section frontpages willl make it just that much easier for a first time visitor to ffind out that we have a dedicated community.

The above also applies to garnering interest from new people: they'll be more likely to see and know about it, and having it in its own section will also help denote its stand-alone, unique nature, helping those unfamiliar recognize it not as a sub-category of something familiar, but as a genuinely novel experience.

In fact, that's exactly how i discovered arena roleplaying as a whole: i was just scrolling down RPG's frontpage and it caught my eye. If not that, it might've happened a whole lot later, or even never - and i'm certain such is the case not just for me.