Now everyone has a fair chance, and besides, the new format is much better than before. What's not to like? Your old island is your old memory - your "training island". Now you know how to get your skyblock working efficiently. Me, im making a mob EXP grinder, then I'll get to iron golem farm and then a piston-controlled melon farm.
A new start means a new beginning, and you have plenty of experience too ;)