@Meddler and/or balance team: can we get an AD omnivamp item? Or a way to lock adaptive runes?

....Or have gunblade give equal amounts of AD and AP so it doesn't push adaptive runes into the wrong stat if you build it on an AD champion?

With new infinity edge coming out and converting attacks to true damage, and with conqueror (which is already out), there is a lot more true damage in the game. And when you convert your regular attacks to true damage, you reduce your total lifesteal, because damage that would have otherwise had sustain attached to it.... No longer sustains from lifesteal. Essentially by buying this item or taking that rune I am reducing my lifesteal.

I want to be able to build omnivamp on someone like Master Yi without turning my AD runes into AP runes and decreasing my DPS. So the solution to this is:

1. I buy gunblade, and you guys add a way for me to "lock" my adaptive stat runes into AD (secondary tree bonus AD, gathering storm, celerity, etc). Things like electrocute and etc would obviously have to be excluded (since they simply do damage and don't add stats, and would want to pick the stat that gives the bigger boom).

2. I buy gunblade, and you guys give it equal amounts AD and AP so it doesn't mess up my runes.

3. You guys rework death's dance into an omnivamp item (with stat nerfs if necessary), and I buy that instead.

4. You guys make a new AD omnivamp item, and I buy that.

Why is this an issue? Because on-hit items and crit items don't give AD. So if I want to go bloodrazor -> guinsoo -> gunblade, or guinsoo -> gunblade rush, or guinsoo -> PD -> gunblade (PD rush might be meta after the ADC rework), etc... My runes will flip. I quite literally need a BF sword before I buy my gunblade. I can't even build something like Frozen Mallet to keep my runes from flipping (it doesn't give enough AD).

Thanks.