What you are stating proves the problem the Alt format has: there are severely fragmented sub-groups that like totally separate sets of songs and only have agreement on a much smaller set of songs. So if you lean one way, you annoy another group and are boring at best to yet another.
Using factor analysis, several of us in research have the feeling that there are at least three significant divisions in the music preference or style groups. Don't ask me which songs or artists, as I thoroughly dislike 90% of Alt music and am focused on the numbers, not the songs; that is what you want a researcher to do!
The biggest issue, though, is whether Alt is a viable future format for one-to-all broadcast radio. Streams can have several different mixes, while on demand can just play what you want to hear. Radio can do neither of those things.
My favorite examples lie in a number of the big national formats in European nations where the on-air signal is the broadest format, but they stream 4, 5, 6 or more variants that include more currents, or various gold eras, or just songs in one language, etc. They combine all the streams and OTA in one package, and sell it combined. This is what national formats can do, but the U.S. is way behind much of the world in that regard and few stations have more than one format variant, usually based on an HD channel, but not a wide variety.
Think if you had one Alt "station" with a variety of streams, all with a different mix or focus. There might be five or six, and you might find just two of them likable... but you'd be loyal to the brand whichever channel you used most.