the big problem with low MC coins, if BTC is having big correction, they gone, if BTC is having massive surge, the low mc coin will be stuck with no price movement at all because nobody know the coin exist in the first place and there's no buying pressure.
overall the scene in low MC coin investment is messy, moreover if we don't look at the holder of the coin carefully, we might stumble upon a coin where an address owns 50% of the coin, essentially a low mc coin created to be a rugpull eventually at some point where liquidity is deemed enough.
so, turning a grand to millions just seem too unlikely unless we're so lucky.
If there are small projects you like, I think it will get more and more important to start building up some marketing muscle, have running in background some kind of grass roots marketing engine or something, because as more and more tokens coins and platforms arise, the total audience will get more and more fragmented.
Small projects will be lost among the galaxies of the huge platforms, lost among the billions upon billions (eventually) of other tokens coins and platforms, so everyone should probably be thinking ahead and even building toward the idea of once you find a project you'd like to support how are you going to bring to it to the attention of your community of folks who if you like it might also like it.
Just as once upon a time "organic traffic" led oodles of visitors to your websites then the adult sites folk started buying up search engines and turning them into pay per visitor systems, then google followed along coming up with AdSense, and so on, likely over time it is going to get not only harder to find something good but also harder to let anyone else know one has been found.
So unless you are actually only interested in what is at a given moment the most "mainstream" and "huge", starting to build up your own marketing engines could well become very useful in the long run.
I have fired back up my own, that long ago the complacency of how awesomely lucrative crypto turned out to be had led me into becoming too "lazy" to bother keeping on ticking along in the background.
Because I agree with you that it is going to be hard for folk to even know the good ones you do manage to find even exist, and I know that supporting projects of a scale at which one's own contribution can really make a difference gives one's own actions the greatest impact / effectiveness.
-MarkM-
EDIT: Remember too that the scammers already have
their marketing engines revved up...