This would equate to a complete and utter lack of DPS decrease. You're essentially asking for a 30% increase in total DPS.
Which is simply going to make it harder to heal a WAR tank. The 15% +healing is the only reason that WAR requires 8.7% more healing than a PLD rather than 25%. You're essentially asking for WAR to become an even *harder* to heal tank.2. With Wrath, change the increase healing to reduce hate generated by external heals by a %. We have 2 cross class abilities that can increase healing %.
Bloodbath provides a comparatively small amount of self healing. You get more out of using IB>Infuriate every 60 seconds and that's actually controllable for burst healing when you need it, rather than having 90% of it wasted on overhealing because your healers top you off. Unless you increase it to some obscene amount, it's not going to get anywhere close to offsetting the loss of increased healing from your Wrath change and it simply creates further problems since you're just replacing a mitigation mechanism that *does* scale with incoming damage with one that doesn't.3. Increase bloodbath healing percentage.
I'm curious why exactly you feel like this is needed. AoE enmity generation always comes at the cost of ST enmity generation. You're essentially asking for WAR to get a crapton of AoE enmity generation for absolutely free (you're increasing damage *and* increasing self healing *and* making it generate enmity, which it doesn't do now). Hell, with this change, you wouldn't even *need* Overpower or Flash: you'd generate all of the AoE enmity you need just punching a single target (which could actually be really problematic when you're having to work with an OT that's supposed to handle adds).4. All self healing generates double enmity.
So you want an ability that deals no damage but still consumes TP? You do realize that one of the major advantages of Flash is that it's effectively free: a PLD can use it without any impact on TP whatsoever (interestingly enough, it actually ends up turning into a 50 TP *gain* every time you use it). Even if WAR were given a clone of Flash that consumed 50 TP instead of any amount of MP, it would *still* be worse than Flash; in fact, it would end up being a substantial buff to PLD because, while both WAR and PLD would be using your TP-Flash clone in exactly the same way, PLD would be getting more than double the cost effectiveness out of Flash because they're packing more than double the mp (which means they regenerate MP faster and have more uses before they bottom out).5. While I like overpower, replace it with an ability that is the same as Flash, but uses TP. Make this ability a cross class skill that pld/gld can use as well.
Really, do you have *any* idea what your ideas would actually do? All you'd be doing is turning WAR into even less of a tank and giving them better DPS. The only thing they'd be useful for is soloing because a tank that generates gobloads of enmity on absolutely everything regardless of what they're doing but is effectively impossible to keep alive because their survivability is only marginally better than a DPS isn't a tank. It's an annoyance that makes everyone's life harder: the actual tank can't tank and the healers have to burn through MP like there's no tomorrow.
Your ideas would "fix" WAR, but not in the sense that's you intended; the version you'd be going with is the one that generally gets applied to pets.