Love the Mostels!
Yeah, I agree, in my Warhammer days ( I only played a few games, but created armies nevertheless) I collected Undead, Chaos and Goblins, later Lizardmen.
The Orcs never appealed that much to me, I have build Night Goblin armies and Forest Goblin Armies ( I created a Spider Cult) but in the end that meant you had a weaker army.
I countered that by inlcuding Trolls and Giants.
Oh well... I loved the army books for the fluff.
These days I only paint and create for fun/display as you do.
It's quite liberating to follow my own rules ( or actually no rules) although I always loosely base the minis in a old fashioned way with Warhammer in the back of my mind.
Strange how this happens even when I don't play.
I still think of needing a few Infantry regiments, a few monsters etc...
Of course with the Lost World the monster part got out of hand, I doubt that a unit of six T-Rexes could pose as heavy infantry.