When I click on Sports on the left side menu, there are many categories but there isn't a category called Specials.
Ohhh perhaps you have missed it? it can be hard to find at a glance because it's sorted by popularity i think.
I was looking for it here, in the left navigation bar and couldn't find it because it's actually not here.

It shows up fine on my end, see:

Yes, now I know where it is but to be honest, it's still hard to find it. I usually place a bet on soccer, tennis and basketball. I think an average user doesn't start digging up sports categories, so many users might miss this opportunity to place a political bet on Metawin. I think it's a UI/UX issue that they need to fix.
I hope so, but I'd say the chances are it most likely gonna be high since it's one of their selling points -- the games they have at the moment are set at highest available RTP, afaik.
They stated in this thread that they have set every slots on the highest possible return to player, so all slots are set to max winning in the benefit of the user. Since they start building their own slots, I'm curious what RTP we will see. At the moment, the max RTP that I see on slots is 98.6, the rest of them are 96-97% on average. If their slots will be 99% RTP, that will be amazing.