I just run the trade statistic with the altcoins to see how many are never traded:
Total number of tokens: 131
Traded assets: 60
Never traded: 71
Never traded since > 4 months (v0.7.0): 38
Never traded Crypto currencies (only coins added until 0.7.0 since that we added about 40 more, probably most of them also have been never traded):
BitCloud (BTDX)
BitZeny (ZNY)
Bitcoin Core (BTCC)
Bitcoin Instant (BTI)
Bitcore (BTX)
Conceal (CCX)
Credits (CRDS)
CryptoTari (TARI)
DRIP (DRIP)
DSTRA (DST)
Devcoin (DVC)
Diamond (DMD)
Exceed (EXC)
FuturoCoin (FTO)
Graft (GRFT)
Kumacoin (KUMA)
LikeCoin (LIKE)
LitecoinExtreme (LCE)
Lobstex (LOBS)
MFCoin (MFC)
Madbyte (MBYT)
Madcoin (MDC)
MaxCoin (MAX)
MegaCoin (MEC)
MicroCoin (MCC)
Motion (XMN)
Myriadcoin (XMY)
NEETCOIN (NEET)
Nano (NANO)
NewPowerCoin (NPW)
Nilu (NILU)
Nimiq (NIM)
PRiVCY (PRIV)
Pix (PIX)
PixelPropertyToken (PXL)
Tamadcoin (TMC)
Triton (TRIT)
Wownero (WOW)
All traded Fiat currencies:
Euro (EUR): 5167
US Dollar (USD): 3079
British Pound (GBP): 841
Swedish Krona (SEK): 170
Australian Dollar (AUD): 157
Canadian Dollar (CAD): 155
Swiss Franc (CHF): 133
Norwegian Krone (NOK): 92
Brazilian Real (BRL): 31
New Zealand Dollar (NZD): 27
Chinese Yuan (CNY): 15
Costa Rican ColĂłn (CRC): 10
Vanuatu Vatu (VUV): 9
Thai Baht (THB): 6
Israeli New Sheqel (ILS): 5
South African Rand (ZAR): 5
Mexican Peso (MXN): 4
Japanese Yen (JPY): 3
Nigerian Naira (NGN): 2
Bahraini Dinar (BHD): 2
Philippine Peso (PHP): 1
Indian Rupee (INR): 1
Cambodian Riel (KHR): 1
Czech Republic Koruna (CZK): 1
Papua New Guinean Kina (PGK): 1
Polish Zloty (PLN): 1
Hong Kong Dollar (HKD): 1
Russian Rouble (RUB): 1
Chilean Peso (CLP): 1
Omani Rial (OMR): 1
All traded Crypto currencies:
Monero (XMR): 1366
Ether (ETH): 316
Bitcoin Cash (BCH): 197
Siacoin (SC): 176
Dash (DASH): 160
Siafund (SF): 98
Litecoin (LTC): 78
Decred (DCR): 49
Gridcoin (GRC): 36
Zcash (ZEC): 19
DeepOnion (ONION): 16
Namecoin (NMC): 16
Ether Classic (ETC): 15
Unobtanium (UNO): 14
Spectrecoin (XSPEC): 12
Mycelium Token (MT): 11
Xuez (XUEZ): 11
Dogecoin (DOGE): 10
Counterparty (XCP): 8
ZenCash (ZEN): 8
Zcoin (XZC): 7
Pied Piper Coin (PPI): 7
Lisk (LSK): 6
PIVX (PIVX): 6
Byte (GBYTE): 6
Nav Coin (NAV): 6
Bitcoin Clashic (BCHC): 5
Pascal Coin (PASC): 5
NuBits (NBT): 5
01coin (ZOC): 4
PostCoin (POST): 4
Burstcoin (BURST): 4
LBRY Credits (LBC): 3
MaidSafeCoin (MAID): 3
Safe FileSystem Coin (SFSC): 3
Obsidian (ODN): 3
Ellaism (ELLA): 2
Aquachain (AQUA): 2
Koto (KOTO): 2
Cryptonodes (CNMC): 2
DACash (DAC): 2
Semux (SEM): 2
ReddCoin (RDD): 2
Internet of People (IOP): 1
Bitcoin Gold (BTG): 1
Mazacoin (MAZA): 1
DarkNet (DNET): 1
Pepe Cash (PEPECASH): 1
Espers (ESP): 1
Sibcoin (SIB): 1
Pranacoin (PNC): 1
Ringo (RIN): 1
Nxt (NXT): 1
Terracoin (TRC): 1
Wavi (WAVI): 1
AchieveCoin (ACH): 1
Creativecoin (CREA): 1
DynamicCoin (DMC): 1
STEEM (STEEM): 1
WorldMobileCoin (WMCC): 1