Why... is that suicide? Icons prevent scatter, and with 2+/5+ saves the unit should be fine unless you put it somewhere completly idiotic.
Look if you deep strike them close enough to an icon not to scater, then you shouldn't have deep struck them as something in your army got there first and the whole idea is as the have to footslog you DS them to get them there first so that when they can start moving the rest of the army is there and they all hit as one big wave. So if you use an icon they all stand around like lemons while the unit closed to them gets pwnd by the rest of your army and they end up chasing another around the board for the rest of the game and never kill anything.
Also if your opponant sees abaddon in your Reserve pile and he is not an utter jackass the first things that will die in your army will be the icon bearers and then he has do do the scatter whatever :shok:.
You are also not taking into acount that maybe abaddon will arrive turn 2. This would mean in order for him to use an icon he will have to DS into your own lines making it completely pointless. Another risk is that he doesn't turn up untill turn 5 by which time he will not get chance to make up his points cost because there is so little left for him to maim and trust me by this time most of your icons will be gone.
Thus the best way to use abaddon's DS is to deep strike him behind the enemy army and say "If you charge him, you die. If you shoot him, I melta your rear armour. If you do neither, you die"
All in all the best way to get abaddon to the front line is in a raider which just throws more points into a formation that already has no chance to make up its points cost.
All of the above is from personal experience and that is why I only run abaddon in apocalypse now (where he downs super-heavies:biggrin

. Apart from that though he rarely makes up his points cost because he is too slow and the enemy see him coming and jump in their rhino (5th ed is tanks :shok

and run.
The only time he came close was when:
Abaddon+termies disembark from raider. Charge Nightbringer. Abaddon reduces the Nightbringer to one wound. Nightbringer kills Abaddon. Single termi with powerfist kills Nightbringer :grin:. Nightbringer explodes and kills termies:shok:.
Whenever I take him, I wish that I'd have taken a DP.