Not really sure if this belongs in "Approvals" or not, but thrilled that Citi finally allowed me to convert my Citi AAdvantage Platinum Select card to the Rewards+ card! I know Citi ecosystem gets a lot of flack, but being LOL/24 with Chase and with the other cards in my setup it works well for me. 
My setup is now:
Amex Gold Card: 4x MR Dining/Groceries
Rakuten Visa: +3x MR most online shopping thru Rakuten
Citi Premier: 3x TYP Dining/Groceries (backup for when Amex isn't accepted), 3x Gas, 3x other travel until April 2021, +2 years extended warranty card
Citi Double Cash: 2x TYP other purchases
Citi Rewards+: Small transactions and 10% TYP rebate
Amex Hilton Honors Aspire: Hilton stays & Flights (due to the flight benefits)
I have other cards too but these are my main group. Just so thrilled to finally complete a Trifecta!
Congrats!
I converted my AAdvantage Platinum to a MileUp card a few years ago to avoid the AF and keep up AA miles earning.
Most banks wouldn't let you convert out of a co-brand card, so kudos for that one.
Your TY points trifecta looks like it's going to earn a good volume of points.
@Citylights18 wrote:Good tip as I may want to consider PC of my personal Citi AA Select to Rewards+ then apply for the Business AA Select.
I see the Rewards+ as a nice swing card.
-Laundry Mat purchases (1.75 rounded up to 10 points)
-Fast food snacks (3 dollar Hamburger rounded up to 10 points)
-Picking up an 8 pack of water at a grocery store
-Amazon Prime (11 dollar prive membership is rounded up to 20 points, 1.99 movies rouned up to 10)
-Amazon discounts using Thank You points
I question if its worth an app for me since I have 12 or so cards already but a PC makes a lot of sense to save the annual fee.
I do have Amazon Prime well covered with the Chase Freedom because while its only 5% this quarter usually you get that at least once a year if you want to keep your account there long term.
I definitely don't see it as worth an app as well, especially since if you get the SUB on this card you'll be locked out of the much larger SUB for the Premier or Prestige for 2 years.
I was able to easily complete the conversion via their live chat function. I've been focusing on flexible points and see this card as a good way to earn more value, especially with the 10% points redemption rebate.