Spring skiing in heavy snow works best on steeper terrain where gravity overcomes the resistance of the heavier snow. Expert bump runs become easier than usual. Flat runs get sticky and grab your skis, so it's understandable that beginners are a lot less enthusiastic about spring skiing than more advanced skiers. Intermediates need to think about time of day and aspect of runs and stay away from steep runs that haven't had enough sun to soften and flat runs that have had too much.
afsi722 is correct about 2011 and 2013 being great Aprils and 2012 being bad. But an average April in Front Range ski areas gets almost as much new snow as an average winter month. And above 11,000 feet April is essentially still a winter month with most snow remaining packed powder.