No pics were allowed in this one-time deal.
20 Years, 20 Exclusives That Never Were.
The first 10 never even made it past conception, the second ten were approved but then rejected
1 – Hardshell (G1 Bombshell) from Generations Darkmount/Straxus
2 – Overlord from ROTF Mindwipe
3 – Hubcap from Animated Soundwave
4 – "Marlboro" from ROTF Lockdown
5 – "Femme Fatale Cykill" from Prime First Edition Arcee
6 – "Predaking BW Style" from Beast Wars Tigerhawk
7 – Shattered Glass Stranglehold from 2010 Deluxe Axor, would have had a mustache
8 – Skyquake and King Atlas (I think?) from Universe Ultra Silverbolt
9 – The Turbomasters w/ Thunderclash from Prime RID Ultra Magnus and four Prime RID Deluxe car molds (Wheeljack, Bumblebee, etc.)
10 – Twilight Sparkle Prime from Beast Wars Neo Mach Kick
What You Almost Got
11 – G1 Ransack from Generations FOC Kickback w/ two Arms Microns
12 – Three pirates from PRID Wheeljack, PRID Dreadwing, Generations FOC Air Raid (Wheeljack was almost this year's Cannonball)
13 – Bumper from Prime RID Rumble
14 – G1 Crosshairs from Generations Kup
15 – Animated Strika from Animated Voyager Bulkhead
16 –
Bruton from Generations FOC Grimlock
17 – Bruton from Prime First Edition Bulkhead
18 – Machine Wars Prowl from Classics Mirage (was replaced by Machine Wars Mirage)
19 – Machine Wars Hubcap from Generations Kup w/ the MW Hoist/Electrons headsculpt
Teasing us with Animated drawings, Sideswipe, Jackpot, Jhiaxus, Goldbug, purple Blackout
20 – The original plan for 2011's Animated set: Toxic Mayhem – BugBite (Animated Hydrodrive Bumblebee) and Toxitron (Animated Wingblade Optimus Prime) vs. Jackpot (which we did get later) and Kup (Cybertron Mode Optimus Prime). Animated Sideswipe would have been based on the SG deco instead of the G2 deco. Animated Tigatron from Rodimus. Animated Shokaract from Blackout. Animated Springer from Swindle. Animated Flamewar, Nightracer, and one other black & green Con fembot (missed the name of this one) from Arcee. Plus G1-colors Breakdown and Action Master colors Thundercracker (both of which we did wind up getting).
One proposal that couldn’t be found was told to us instead: a BotCon Alternators box set. Four figure box set. Galvatron from Wheeljack (new head). Cyclonus from Mirage. Ultra Magnus from Optimus. Rodimus from somebody (but we got one anyway).
The Ultra Mammoth idea came out earlier, in like 2012 or so. And since we got a BW version of Ultra Magnus, and there was already a BW version of Optimus, who does that leave that's missing...?
Bonus 21 – Rodimouse from Transmetal Rattrap!
It's got 'the touch', even. 
