@ Tilo -
Your argument starts with the premise that, given more choices, there would be more diversity. I disagree.
This community (not all individuals, but certainly as a whole) is experienced and sophisticated enough with the game that it will always determine the "<X number> of optimal feats", in order. The numbers will be crunched, the data analyzed, and a consensus reached on the results, with outliers being viewed as sub-standard. So, regardless whether you're given 1 or 7 or 18 feats to choose, those will always be (almost*) identical for those who value META** over personal play-style or flavor.
* The only variable is when 2 feats are, in fact, both equally attractive, or (as was the case with Power Attack vs. Precision) when each is better for a different situation, and/or when one can argue the order that the feats should be taken. (This occurs in casters more than melee/ranged.)
(** for new(er) players, that's "Most Efficient Tactic Available", i.e. picking "the best" combination to get "the best" result currently available. Tweaks, nerfs and updates continually change the META, and rarely a player has an insight that shatters the old one with a new approach.)
I would suggest, therefore, that in fact what you see lacking is a wider variety of equally "good" feats, or of feats that each are equally attractive but in different ways (e.g. for clearing trash vs. for beating a boss, or for high DPS vs. high survivability, etc.).
And, I believe, those do in fact largely exist - but are not all equally powerful. So what does not, nor probably ever will exist, are multiple roads to "optimal". While creating new feats is easy, what is not is balancing those such that one set is not undeniably META. And that set will bring us back to your original premise - that these 7 (or 3, or 18, or whatever number) are "default".
So if you're trying to maximize a character (which I've seen you do before, and at a high level of expertise)... yes, you (especially) are going to see one and only one road to get there, every time, no matter how many different options are made available.