For 1 and 5, keep in mind that this is a site about a Pokemon series, so the game forums will typically have a younger userbase than you seem to want (and the counting games are more popular with older members because there's a high social interaction part to them), and that many of the younger users don't have the attention span for such games, while older users often do the types of things you want to do at sites dedicated for those things or do them with people they know and see regularly offline, or have other interests or lives they are trying to pursue.

You'd also be surprised how many of these games are staples of sections for forum-based games on forums. A counting thread is standard in almost every forum game section on every site I've ever been to, because, quite honestly, counting is quite fun for most people.

If you want to play tabletop-style RPG games in those sections, try getting a ton of people lined up to play them, and make sure they post often, and make sure they're people willing to stay committed.

Most people go to the Trivia sections for quick fun and general, random chit-chat, so you'd have to cooperate with BinaryPeaches to get a mafia game well publicized for Pokemon Trivia, and also cooperate with her and Netto Azure if you want a mafia game to get good exposure in Other Trivia, since, as long-time members who are fairly active, they can cover advertising the mafia game for many sections you've never bothered to post in.

I suggest you give Pokemon Trivia's The PokeName Game a try. It was inspired by a webcomic posting on a website.

Nothing's stopping you from posting a new game. Just make sure it's appropriate for PC and isn't already a game in existence. Although playing an actual Tabletop RPG might fit better and catch the eyes of more people who would commit to it if it were put into Tabletop Games.

The signature rules have been tightened over the last year to limit how wide and tall one's signature can be in pixels. If any CSS coding is still stretching your browser, you report the signature so it's called to a staff member's attention and they can check it, and if it's in the rules, you may be using either a terribly small screen or a browser with inadequate CSS support.

We banned spoilers in signatures to make it easier for us to catch signatures that break the rules and we've put a total height limit on all signature content including text.

So if you haven't seen any signatures in over a year here, then you should check some out.

The Spinoff Games just aren't as popular with fans as the main game, and, like Syd said, people will talk about them when they want to talk about them, which is usually when news of a new one comes about.