That could be an interesting system, but it wouldn't replicate 4e - in particular, in this system there is no way for a swooning/unconscious character to regain consciousness because inspired by the words/deeds/memory of the inspiring warlord.
Well:
Player 1: 8 HP left (swooning), charged by an Orc. The player seems caught off guard (the Orc's roll to hit is high; a successful hit, unless ...)
Player 2: A Warlord, shouts (really screams) to player 1: Get your guard up, you mother loving fool!
Player 1: Spurred, raises his guard, only half-aware, just in time to parry the Orc.
There is no in-game representation of swooning, except perhaps that one is at low hit points.
Being below 0 hit points usually means being unconscious, but, there isn't a need to be that strict. Being below 0 hit points can mean being incapacitated, but there is space for a player to be semi-aware, and able to respond to shouts or to be administered to by another player.
A problem that I have with an inspiring speech working as a healing surge is that I see working better as either a morale bonus (to attack and defense), and possibly as temporary hit points. Since those work better for me as an interpretation of inspiration, the use inspiration for healing is sidelined, then cognitively excised.
I don't think there is much evidence that this is true.
Is there less story telling, narration, immersion in a typical session of Maelstrom Storytelling or HeroWars/Quest, or even AD&D with is 1 minute rounds, compared to Chivalry & Sorcery, Rolemaster or Runequest? I don't know that there is.
Compare with the new Warhammer Fantasy Role Play, which is much more concrete. There are still many abstractions (reckless/conservative stances, with a several degrees; abstract Fortune and Misfortune, from the dice), but with just a bit more interpretation built into the abstractions: Reckless really means reckless, although, without being precise.
I did add that note at the end as an edit, and am not entirely satisfied with it myself. But I do find healing surges as presented, to be unsatisfying, and a part of that relates to an inability to break out of the abstraction. Hit points are abstract. Healing surges are an uninterpreted mechanism for recovering hit points, so even more abstract. That's gotten too much for me.
TomB