Right now, we have this.
Unfortunately, with the mode tab, I don't think it accurately reflects the mode at a glance. Nexus siege, Ascension and others boast drastically different maps comparative to the core game. Using ~~professional skills~~ Microsoft paint and five minutes I made this ~~god tier~~ ~~incredibly perfect~~ ~~Riot-caliber~~ depressing mock-up.
Replace the TT map with whatever the map would be and you're sold.