Oh I wasn’t thinking of getting rich off of it, or even earning a living from my sales, It would definately be as you say a vanity project.
More of a way to focus my creative juices and keep me from meandering all over the place and only ever half finishing anything.
On the other hand, if nobody but me would be interested in it I might be better of looking for an other way to motivate myself.
Also part of the fun for me would be learning how to build/sculpt things for casting and then eventually learn to cast in resin and maybe even drop/spin casting in metal. As you said some of the minis above would rip the molds to shredds.
If you like small scale skirmish, check out http://planetares6.blogspot.be/?m=0