Speakers for room size that provide greater detail.

Friends had magnepans up to the 20.7. I never liked them as well as box speakers.  1 of my friends did sell his 20.7 to move to a box speaker.

i have revel speakers in a couple of systems. For your size of room, I would go for a used pair of revel salon 2’s. Much better than the usher md2, and dynaudio. 
Your rotel will be holding you back. When I had a room that was 27 x 16 x 15’ tall, I had the top of the line Classe monoblocks to power my Revels and large ushers.

Stand mount KEF Reference 1 Metas very resolving.

Pure Audio Project  So musically detailed and efficient.  My son said it was the first time it actually felt like an acoustic guitar was in the room.  Also have Thiels and Ohm Walsh speakers which sound good, but the PAPs are great.

For that size room getting a speaker with a larger driver will move more air and sound more effortless, dynamic and imo real. Open baffles like spatial and PAP are good choices. I’d also look into Fyne audio. Listening to a pair of F502s’s right now in 16x20x12 room that opens to more space and they sound amazing for $3500. Sound gets even better if you move up the range. I got these about 6 months ago to see if I like their sound and I’m likely moving up to the 703sp’s in a couple months. 

With a 10 K budget, I’d be lookin at a new set of Legacy Focas SE’s. Their a bit more
expensive but your 2 subs with a set of Focas SE’s will FILL that room with precision dynamic sound, and their beautiful. We love ours and room size is similar.