I don't consider my Roth IRA to be part of my retirement picture since it was never very big (even though I've had it since the mid-80s, I only put a total of $8500 into it), but over the last couple of years I've grown it to the point where it's now nearly 10% of the value of my TSP. My plan is to use it for things like funding a summer-long road trip next summer, 3 months heading to the west coast to escape the Florida heat and see my kids/grandkids, up to Washington to see my family, a couple weeks here and there in vacation rentals to really explore/hike/photograph some of my favorite places like Mt. Rainier National Park, then up into Canada and back to Florida eventually...visiting lots of National and State parks along the way... so it's mostly a "fun" account, and I'm having fun trading it. I haven't transferred my TSP to an IRA yet (if I do it will be a traditional IRA) but i'm moving in that direction as I'm developing a system to trade it that would do better using ETFs where there are no TSP trading limitations.
I also have two smaller taxable trading accounts, one with TD Ameritrade where my IRA is...I'm also doing well in that one this year (Peter Eliades software is really helping and my trading success rate is an astounding ~80 to 90% this year in all 3 accounts) and one with TradeStation, which I had to open to get Eliades' software.
Eventually at some point in the future if/when I get an inheritance the plan is to invest that entirely in a dividend portfolio. That will round out the overall mix.