Why not simply cut standstills? as far as I'm concerned, confidants are supposed to replace them, it frees up 2 spots (you probably will want a 4th confidant) and stabilizes your mana base. I think 3 standstills + 3 confidants might be a bit excessive. I also question running only 3 dreadnoughts with only 3 confidants (less creatures to eat STP etc). I've found that one of the main benefits with confidants is that you can actually manipulate the opponent to counter/remove your lesser threats in favor of dropping an un-counterable/removable dreadnought the turn after.
This same argument could be applied to running goyfs as someone mentioned previously. I often have huge troubles with making the decision whether or not to wait for CB before dropping dreadnought vs fast aggro decks etc. Having additional creatures to eat their removal helps greatly in this situation where you more often than not dont have time to wait for CB before dropping buisiness down the table.
for reference this is my list:
// Deck file for Magic Workstation (
http://www.magicworkstation.com)
// Lands
4 [MI] Island (3)
4 [ON] Polluted Delta
2 [ZEN] Scalding Tarn
1 [PT] Swamp (4)
3 [R] Tundra
2 [A] Underground Sea
4 [TE] Wasteland
// Creatures
4 [RAV] Dark Confidant
4 [JGC] Phyrexian Dreadnought
2 [FD] Trinket Mage
// Spells
4 [IA] Brainstorm
3 [CS] Counterbalance
3 [DD2] Daze
1 [FD] Engineered Explosives
4 [AL] Force of Will
2 [CHK] Sensei's Divining Top
3 [DIS] Spell Snare
4 [SC] Stifle
4 [4E] Swords to Plowshares
2 [TSP] Trickbind
// Sideboard
SB: 1 [FD] Engineered Explosives
SB: 1 [FD] Crucible of Worlds
SB: 2 [PLC] Extirpate
SB: 2 [6E] Perish
SB: 1 [SOK] Pithing Needle
SB: 2 [TE] Propaganda
SB: 1 [HOP] Relic of Progenitus
SB: 4 [ZEN] Spell Pierce
SB: 1 [CH] Tormod's Crypt
2 tops seems about right. My local meta is infested with goblins and other fast-aggro and propaganda has thus far been working wonders, especially against goblins. They either grip propaganda and then being unable to deal with dreadnought, or they grip dreadnought (which is even better), thus being unable to deal with propaganda. Other than that, I'm not overly satisfied with my SB, my controll MU could be a bit better. Maybe I should throw in a jace or two?
I've been running dreadstill for about a year or so now and I can honestly say that this is the list I'm most comfortable with and been having most success with. Like I said, my local meta is quite aggro oriented and I'm still dreading the merfolk match up a bit (havent playtested enough though). The list is consistent and I have never looked back since I dropped standstills. Top + confidant is inherently a very powerful combo, while running 7 colorless lands, making your deck inconsistent, is in my opinon, not quite so.