1. why would you think you've missed the train on IOTA? This whole industry is still crawling through it's infancy with a long ways to go?

2. I think it's important to keep the use and applications in mind when considering any crypto. They are not all designed to be a general currency that you'll buy groceries with. With that in mind, I'll have to think about when and where being decentralized plays a role. In a business supply chain application decentralized my have no particular value and may even be cumbersome. Same with the difficulty level associated with coins such as bitcoin. No sane person would make that part of a supply chain blockchain if they plan to create blocks for every product in the supply line. So you need to keep the application in mind when judging features.

3. I've just recently starting looking at IOTA. The really interesting thing about it is the tangle. Instead of competing to add blocks to the end of the chain with one winner and lots of losers that have to start over, you can add blocks off any two other blocks, so millions of new blocks can be added simultaneously. Keeping the whole ledger up to date might become a challenge, but in a business transaction environment this means millions of transactions can be completed simultaneously - and very fast without a difficulty being added - which is exactly what you want in a business environment. Unless of course you like standing in line at the register for a week while every purchase in the country is competing to be added to the chain with a BTC style chain.

Imagine millions of people using an online streaming service and wanting to start a movie. Do you want it right NOW or 3 days from now when your transaction finally gets included by the winning miner?

I think the tangle has potentially huge applications. Maybe not as a pure currency, but blockchain is not just about coins.