Might need to change the league name then no?  Seriously I think there are other ways to encourage more turn-over. A cap on trading cash for example. Would like to hear more about your idea for extensions even if radical.

I would agree with you on the cap for trading cash.  There should be a max amount of additional cap a team can take on.  I would say we disagree on the definition of dynasty.  Dynasty for me is the ability to build and continue rebuilding my team to be competitive year in and year out while dealing with constant player movements/ changes.  The dynasty part is me as a GM , not the players being able to stay on my team from draft to retirement. 

For the extension thing, i am not suggesting it for this league as it just wouldnt work. I will give you the real short of how its setup though.  As a base line everything is managed by fantrax for contracts except for each team has 3 franchise tags to use per season.
Contracts initial length is 3 years.
Extension option year is after their 2nd year.  You have the option to extend for 0, 1 or 2 years.  Each year extended adds 1 million to the players salary contract.
After the option year players are not eligible to be extended unless the GM uses 1 of their franchise tags.  Franchise tags can be used to extend players for 1 or 2 more years.  (each year extended would add 1 million to their contract).  You can use a Franchise tag on a player more than once. So say you have connor mcdavid,  starts as a rookie at 700k ,   you choose to extend him on your option year. for 2 years. His contract would move to 2.7mill.  At year 5 his contract is expiring , you can tag him for another 2 years bringing him to 4.7,  at year 7 you can tag him again bringing him to 6.7 and so on. 

What this does is each season teams end up with a mix of players that are on expiring contracts that they have to decide if they are getting too expensive or teams that have made moves to win that season end up with too many expiring contracts to extend all of them. (They always have to options to trade them after playoffs and before roster rollover.) Teams that are out of playoffs tend to look for trade partners for their expiring contracts.  Teams in playoffs tend to take on expiring contracts as rentals knowing that those players will end up back in FA. 

This would not be possible to implement here since it would take way too many changes in all areas. 

Some aspects that maybe we could consider implementing -
shorter term contracts. 
Extensions that dont go down in value. (if player A is at 5 mill per year, has a couple of injury years before extension they would need to be extended at the 5 mill at minimum even though they would extend at 3 mill on chart). 
Contracts that are considered final contracts (non extendable after they been extended once) Would need a Ftag option here as teams should always have some options at their disposal. 
Maybe a max amount of extensions per team. 


All this said, I am fine with the current setup.  I like that players are getting too expensive to make the extend decision easily.  What we may want to look into is there a way to tie our extension factor to total league production.  For example this season there has been some crazy offense compared to others.  Having the same multiple of 25000 with higher league production and static cap is making many players extension costs more than what is reasonable given our cap has not changed.  Or alternatively maybe our cap number is based on total league production but we keep the extension factor of 25k the same.

Torey Krug, 3,300,000 x2 = 6.6mill

Luke Schenn $1,254,000 * 2 = 2,508,000

Rasmus Ristolainen $1,056,000 * 2 = 2,112,000

1.8

1.8m