How is that tradition? It happened one time. Successor name suffixes and prefixes used: super, color, advance, mini, 64, i, 3, new, u. It could be anything.
Edit: ah no, there was also super game boy, I guess that's the only one they repeated. But that was specifically for super NES compatibility.
Do "i", "mini" and "new" really count as new consoles? i and new were just upgrades to the same console, I believe, and I'm not sure what "Mini" was even for..
I mean, they were direct successors. I imagine the next console won't be something completely different than the switch, so I imagine I will be some sort of switch 2.
How about the Swiitch? You get the roman numeral 2 in there and the name's similar enough to the original Switch, so customers will be confused as to whether this is a new console or an iteration of the current one. Just like the Wii U!