The other HUGE problem with the idea of trading Martin is that he and Evans have BARELY played together. You cant judge how well two players mesh with a sample size of 5 games. Nor can it be determined how well a player meshes with the entire team. One cant determine whether or not a player is needed until that player has actually played with the current team for a fair amount of time. We havent seen what the current Kings plus Kevin Martin looks like.
Theres always the option of Using Martins expiring contract as trade bait in a couple years.
Again I disagree with your argument. While it's true that Kmart and Tyreke haven't played together, that is pretty irrelevant to telling us whether wwe need Kevin or not.
So far this year we average 103.9 points per game. Assuming Donte/Beno have been our replacement shooting guards (arguable I know)
Donte has averaged:
18.7 mins 46%fg 51%ft 34.4%3pt 2.4rb 1.0apg .6st .6blks 8.2 ppg
Beno has averaged:
30.2 mins 53%fg 86%ft 43.4%3pt 2.4rb 3.9apg 1st .1blks 13.7ppg
that works out to your shooting guard spot providing:
21.9 ppg 4.8 rebounds 5 assists 1.6steals and 1 block in 48 minutes
in Kevins 5 games he averaged:
30.6 ppg 5.4 rebounds 2.6 assists 2 steals and .2 blocks in 42 minutes
So the main difference between the two pairings is a little more scoring with Kevin which I don't know if we need since we already score 103 a game. Strangely the length of contracts are similar between the Beno/Donte pairing and Kevins contract. The former costing roughly 3 million dollars less a year. The other deterrant to keeping Kevin is the fact that if you keep kevin, you still have Beno and Donte meaning your paying beno and donte to take less minutes even though they've proven they can effectively platoon the 2 guard spot. (none of this even includes Cisco)
I simply don't see the benefit in paying Kevin as highly as we would be given the production we've seen from his replacements. If you can get an asset like a lotto pick in a good lotto year and cap space it seems to me to be a no brainer as great as Kevin is.
As far as waiting for Kevin's contract to expire like you mentioned, we would be waiting for this season and 3 more to finish before it expires, so waiting a couple years and using it as an asset because he's expiring makes little sense. Added to that is the fact that Kevin won't be young at that point anymore either, and could carry more value as an expiring than as a player, whereas now he carries tremendous value as a player.
