Ireland and Scotland Tour and Pan-Asia Tours

No Ireland & Scotland combined tour. However, I've read trip reports here on the forum where folks have taken each of these tours in one vacation, one after the other. If time off is an issue you could always take the shorter tours of each country or even one short tour & one longer tour, such as Scotland for 8 days, and Ireland for 14. I have taken the longer Scotland tour and the 14 day Ireland tour and loved them both. As for pan-asia tours you would have to ask the R Steves' office. He travels to other countries than in Europe, but has always said Europe is his 'beat.'

No, but he offers short Ireland and Scotland tours that you could combine. All tours available are here:
https://www.ricksteves.com/tours

He has repeated said he wants to stick to Europe only.

And we absolutely LOVED our Scotland RS tour we took in 2023 and we visited the Edinburgh Tattoo! The hotels were absolutely fantastic, our tour guide was incredibly knowledgeable and we had an outstanding time.

Rick Steves has stated that his absolute favorite country to visit was India. As LizinPA mentioned, however, Rick’s tours are sticking with Europe.