Ah here's another one that makes sense to me.
So you know how you just hate that sometimes, after taking a class/race and a background, you get skills that "double up?" Yeah the book says you can swap it out for another skill, but here's a thing that I allow. The doubling of a skill, if it happens, allows you to use half your prof rating to it. Then if you actually spend downtime and the gold to train in that skill again, you then get Expertise.(For skills that don't double, you have to train to get half prof rating, then train more and spend more gold/downtime to gain Expertise.) So with enough time, gold, and surviving long enough, your character can get Proficiency in all the skills and eventually get Expertise in all. the balancing being, the increased gold cost and if your character survives long enough to reach that point.
Another House Rule I have is that at Level 15, your character can pick a Virtue from Adventures in Middle-Earth. So if your an Elf, you can choose one of the generic Virtues or one of the Virtues that apply to Elves only. If your a Dwarf, then one of the generic ones or the Virtues that apply to Dwarves only, etc, etc.