YES!!! YOU GOT IT!!! It is "PROFIT AND LACE". Here are the explanations...
1. The name is spot on... Aluura, with her name obviously suggesting alluring.
2. The old switcheroo... Quark is made into a woman.
3. An unexpected chase... Nilva chases 'Lumba' around the room.
4. A lone ally... Nilva was the only one of the Nagus' allies that bothered to come to DS9.
5. Many transmissions... Quark, Rom, and Nog make a lot of transmissions to all the various Ferengi who were helped by Zek.
6. Someone else was fit for the role... Quark makes the observation that Rom should have been made a woman, based on multiple tips on how to be a woman.
7. Eager to try... Allura is eager to try some of the techniques from the book Quark gave her.
8. Do we really want to have that?... With the Slogan of Slug-o-cola being 'The slimiest cola in the galaxy', do we REALLY want to have it?
9. Very intelligent... Nilva tells 'Lumba' that 'she' is very intelligent.
10. A heartfelt experience... Quark argues with Ishka so badly that she has a heart attack.
11. Keep it green... 'Lumba' suggests a new slogan for Slug-o-Cola that says it will keep your teeth a shade of green.
12. They are such ingrates... All the people Zek had them contact were helped by Zek, but in his hour of need, only Nilva came. Talk about ingrates.
13. Competition was impressive recently... 'Lumba' tells Nilva that Eelwasser had an impressive quarter recently.
14. Quark is to blame... Ishka tells Bashir "It's all Quark's fault" when he comes out of surgery with her.
15. Helpful hints from an unexpected source... Rom gives helpful tips on being a woman, which is not what anyone expected.
16. No complaints against her... Allura has done such a great job that no one has a single complaint against her.
17. That book contains a few tricks... Quark gives Aluura the book "Oo-mox For Fun and Profit", which describes several tricks like the Tympanic Tickle, Eustachian Tube Rub, and Auditory Nerve Nibble.
18. Fourth appearance of this character... Ishka appears for the 4th time in the series.
That was starting to get exhausting, coming up with clues. I think 18 is the new record now, for ALL the shows withthis game.
You have the bridge, mlbach.