Add regular expression support to as native database feature

RegEx would be a deal maker! I'd also add a whole bunch of functions, eg, Soundex, Levenshtein etc. I'm still new to Power Query and wonder if i can add functions using "M". If so, then it would be neat if somebody could start are library of these. Similarly, i already use a VBA library of such functions inc RegEx in MS Access. Makes sense to have something similar in Power BI.