Look at MM? You don't see them coming back, there legacy is enough just like FOE who imo shouldn't have bothered to reopen since there legacy is as big (arguably better) as MM's. EoP have made a name for themselves also, although not as extensive as MM and FOE they still have made a name for themselves in the pure community and will always be remembered just as the two clans above. An honorable mention goes to The Hatred, who were also a powerful clan back in the day and still to this day the oldschool people of the pure community still talk about how successful there legacy was climbing from a merge of two low tier clans to a powerful clan competing for #1. Could also mention Epidemic who were clan able to research number one f2p and hold it for months despite being lvl 60s in mith.
TLP/CP/FI on the otherhand will always be remembered for:
TLP = clan wars clan, brown sticky stuff in the wild , made up of private server clans who encourage there members to train defense to compete.
CP = a clan that has had the longest slump in pure clanning history ,getting clans to close into them for free ranks,massing and bringing LPC invites on trips and competing against low tier clans.
Fi = had a slump for 3 years not as long as CP. However unlike CP (who have the brown sticky stufftest history in pure claning) Fi have a mediocre history, taking number #1 f2p in 07/early 08 and end of 2013/beginning of 2014, however 2013/2014 competition wasn't really there due to MM/FOE not being open.
The era of the new clans is near, with all these LPC's which hopefully do move up soon we will see the brown sticky stuffters above close and move on from the game.