We have all played pandora, and I’m sure most of us have come to partially enjoy it for what it is. It isn’t perfect, but things rarely are. The common point of concern when it comes to Pandora is the shards and the pandora opening mechanic. Thankfully, the reasoning behind the Pandora mechanic has been clearly laid out for us in https://www.faeria.com/news/announcements/45-faeria-friday-may-27th-2016-artifacts-and-you.
Basically, "The problem in a limited environment is that aggressive decks are inherently weaker ". To solve this problem, the pandora opening mechanic was created to turn off the wells at a point in the game, forcing the controlling decks to actually try to win, rather than continue to stockpile mana. While this is a clever partial solution to the balance problem, I believe an even more simple solution is possible which would allow for the Pandora system to be completely removed from limited.
Reduce player’s starting life total. If the problem is games taking to long and games favoring control to much, simply buff the aggro decks by letting them start the game with their task already easier than their job in constructed. Thoughts?