ind ourself that the POSSIBILITY of 1000TPS brings us to 1000TPS in a few years. If we now state "not possible", we lose one feature.
1000TPS will not even touch the sides in a few years, if NXT manages to get it right.
So I would plan for far higher than 1000tps, solve the accompanying block chain problem and make sure you can do instant transactions, unless you just want to nibble around the crumbs that VISA / Mastercard will drop - both of whom have bough e-money platform companies...
Sorry - one thing I forgot...
If you assume several billion people on the planet will continue to use text phones for the forceable future (years) then these e-moneyplatforms will stay. This does to stop the spread of crypto the processing of FIAT and E-money is expensive so I can see an evolution where these platforms swap their e-money wallets for crypto wallets and become a kind of equivalent to block chain.info for people with only text phones to access/store a digital currency from a text phone. There will probably be a period where these platforms will provide both types of wallet and it will be interesting to see where this goes.