Lately i've been doing a bunch of games that can be mapped in a day, if not two in a day. This will cause the list to shrink rapidly,
As for "1.36 NES games per day", this not unreal because some games consist of one-screen "maps" or have non-platforming structure.
Yes, that's true, a quick scan of the list reveals a bunch of sports games that usually don't have too many fields/courts/diamonds/etc. I looked on a list and counted just now, there's 21 baseball games for the NES (including the unlicensed games Quattro Sports and R.B.I. Baseball 2 & 3) and seven of those that are still unmapped begin with "B", so maybe that's why that's an easy thing to spot.
Definitely a few other simple games that could be knocked out really quickly.
Getting all of the games mapped in a few months is still a stretch, though, there are still a few RPGs and adventures (the Advanced Dungeons & Dragons games, Tombs & Treasure, Ultima: Warriors Of Destiny) and a few that would be technically challenging to do justice: various flight simulators (including stuff like Star Voyager), games with unique "3D" effects (Castelian), games with peripherals that may not be easily emulated (Miracle Piano Teaching System).
Maybe it would be good to highlight the ones that might be a challenge so that those who like to figure out a way around such hurdles can already start investigating how they could be mapped, rather than leaving them right at the end. If the gears are in motion then the "simpler" games could be mapped out while a solution for the harder ones could be worked out.