I am wondering some ICO's accept only ETH. Some accepts BTC, ETH, LTC and other cryptocurrencies as well. Does accepting more currencies in ICO plays a roles in its success.
Also Ethereum's smart contract are built for accepting only ETH. How other ICO's are accepting multiple cryptocurrencies and pays tokens accordingly? Do they have to maintain a sheet of who pays in what currencies in a sheet and allocate tokens accordingly. It seems to be a hard manual process.
Of course the ICO platform will be the one who will designed and deviced how their sales will work out. Some only chooses eth since their project is relies on the eth smart contract. This is also a good factor how projects can be examined. If an ICO accepts multiple currency meaning they are working beyond normal. Imagine not all people are fond of eth alone, some prefer btc and other coins. So better to pick all currencies to support running an ICO so youre chance to sell more with different investors.