I have made a sugar soap, of course I have, :razz: using 34 oz oils with 20 oz sugar. It was a mix of table sugar and demerra sugar. Oils were tallow, olive oil, CO, PO and 6% castor. The bar was not at all soft and lasted a decent amount of time, and never got weepy. I gave it a long cure. There really is not much I have not tried...
For some people any coconut is to harsh for them. I make a gentle facial bar that has no coconut oil. The only thing I notice is the fact it never feels like it rinses with a 5%+ superfat. I use 2% superfat it it, but it is subjective. All soap will lather and adding aloe juice plus sugar really helps, in my next batch I am going to try sorbitrol (hope I spelled it right, it is 4 am and spelling if iffy).