Silk Touch mining buff

Silk touching a block has always been a worse way of doing things in terms of mining, but I think silk touch needs a buff so it can compete with fortune in mining adventures. The buff would be simple and would buff another lacking feature as well, just make it so that if you smelt a ore block you have let's say a 20% (could be balanced later) chance for the smelted block to not give a singular piece but an entire block. So for example I smelt a iron ore block I would have a certain percent chance to get an iron block once smelted instead of just one ingot. This change would especially be a good addition now because of the new raw ore system with iron, gold, and copper. If this is not a good buff or it is too over powered than just find another solution idc as long as silk touch gets a buff so it can compete in mining with fortune.