I see what you're saying; but for your first few titles, I'd probably recommend just focusing on creating something that people will want to download and use/play later in the first place.

Also remember that once it's downloaded, they'll hopefully use/play it multiple times. So, maybe you should just update this app in 10-15 days, to get more installs, and then release a higher quality app in a month or so, instead of in two weeks.

I don't think it's about how many people are downloading your app today, it's more about how many people will use your other app(s) during the day/week of your new release.

Just be sure to be focusing on the right thing.

That's my opinion anyway. :)