I miss Normal Rooms (All Welcomes and BB rooms every day) and when you could start GBs with 14 BBs and 2 CAs instead of waiting 7+ minutes for CVs.
Top 3 mistakes:
1.) Releasing of New Nations, Subs, ASW, New Event Ships without proper Balancing, something that should have spent 3 extra months for each of to do before live releasing. I mean seriously, 1 month to basicly rebalance the game everytime something is released? Really?
2.) Current Shared EXP system. Accelerated the decline from the height of NF in early 2007.
3.) Changing of GB1s from the classic 14/6 limits with the old starting requirement of 16 players to the current numbers. Removed the ability to quickly start games, thus doubling and some cases tripling wait time.