But I specifically asked you above if you think your proposal would work for large as well as small transactions and you said yes
Where did you ask exactly that?
If I remember correctly, you asked whether the Bitcoin certificates could be used for anything other than securing loans and paying debts only. Then yes, you could, for example, buy a home with these paper bitcoins. Should buying a home not be included into the category of other uses? Personally, I'm more inclined to think that small transactions with fiat money still sticking around wouldn't work primarily because of the floating exchange rates, not because there can't be small denominations if these are required. But, on the other hand, this issue is basically the same as with any other foreign currency, not just Bitcoin. For example, you would certainly have difficulty when trying to pay with dollars for a dinner in a European restaurant (even if you had cents and dimes for change)
Regarding their usage, they could be used like any paper money, i.e. for buying things and paying for services
What do you mean by that line? What buying things and paying for services mean to you? Only $1000+ bills?
Buying a home, for example. As I said above, with fiat still hanging around smaller transactions don't make sense primarily because Bitcoin would be a foreign currency in respect to any other currency used locally