I understand what you want, but I'm still convinced that all "per day" mechanisms are flawed from the start.
Let me explain: give something "per day" (be it spells, special ablities, whatever you like) necesseraly means that you balace things with a certain amount of encounter per day, it also means (at least meant in WotC mind 'til not so long ago) that you can make that particular thing powerful (as in VERY powerful).
This leads to the nova thing (also known as the "5-rds adventure day")
This can only be good *IF* you play by the rules the designers meant. So:
- if you like gerilla-like campaign, all your "per day" players will feel useless because, even with a drastic resource management, they will run dry pretty soon (compared to the adventure's length)
- reverse case: if your style is more careful planning and single encounter followed by some recovery time, you're also screwed 'case this time it's the "always on" type of guys that cry out loud!
This is why WotC changed its mind and head toward "per encounter" or "always on" mechanisms (Warlock, Psionic focus already present in pretty old materials; even more visible in newer products: MoI, ToB, ToM, reserve feats).
Aside from being able to be useful all day long, these systems are far less powerful than their "per day" counterparts, so far less easy to break.