Follow link for White Papers for Astro2020.

Ground-based O/IR interferometry science papers: 6
Papers mentioning the value of ground-based O/IR interferometry: 18
Papers mentioning space interferometry (not astrometry): 14
Papers mentioning space interferometric astrometry: 32
Total unique science papers citing need for O/IR interferometry on ground or in space: 62

Science at Very High Resolution: The Expected and the Unexpected. (Creech-Eakman and the USIC)

Fundamental Stellar Astrophysics Revealed at Very High Angular Resolution. (Aufdenberg et al.)
How and When do Planets Form? The Inner Regions of Planet Forming Disks at High Spatial and Spectral Resolution (Milan-Gabet et al.)
Quantifying Stellar Mass Loss with High Angular Resolution Imaging. (Ridgway et al.)
New Frontiers in Binary Stars: Science at High Angular Resolution (Schaefer et al.)
New Astrophysical Opportunities Exploiting Spatio-Temporal Optical Correlations. (Barbieri et al.)

Active Galactic Nuclei and their role in Galaxy Formation and Evolution (Kraemer et al.)
Astrometry - Challenging our Understanding of Stellar Structure and Evolution (Benedict et al.)
Active Galaxies And Quasars, 2010 - 2020 (Elvis et al.)
The Galactic Center: A Laboratory for Fundamental Astrophysics and Galactic Nuclei (Ghez et al.)
O/IR Polarimetry for the 2010 Decade (SSE): Science at the Edge, Sharp Tools for All (Hoffman et al.)
The Formation and Architecture of Young Planetary Systems (Kraus et al.)
Decadal Survey White Paper: Probing Stellar Dynamics in Galactic Nuclei (Miller et al.)
Understanding Mass-Loss and the Late Evolution of Intermediate Mass Stars: Jets, Disks, Binarity, Dust, and Magnetic Fields (Sahai et al.)
The time axis in stellar evolution (Soderblom et al.)
The Detection of Habitable Earth-Mass Planets Using Ground-based Optical Telescopes and Precision Radial Velocities (Vogt)
Astronomy on Antarctic Plateau (Wang et al.)
Understanding Habitability and Characterizing ExoEarths: The Role of Debris Disks (Roberge et al.)
The time axis in stellar evolution (Soderblom)
What is the Structure of Relativistic Jets in AGN on Scales of Light Days? (Wehrle et al.)
Investigations of the Formation and Evolution of Planetary Systems (Wooten et al.)
Asteroseismology: The Next Frontier In Stellar Astrophyhsics (Giampapa et al.)
The Formation and Evolution of Planetary Systems: The Search for and Characterization of Young Planets (Beichman et al.)
No Planet Left Behind: Investigating Planetary Architecture and Diversity with SIM Lite (Kulkarni et al.)

Exoplanet Characterization and the Search for Life (Kasting et al.)
Mass Transport Processes and their Roles in the Formation, Structure, and Evolution of Stars and Stellar Systems (Carpenter et al.)
Dynamos and magnetic fields of the Sun and other cool stars, and their role in the formation and evolution of stars and in the habitability of planets. (Schrijver et al.)
Characterizing Extrasolar Planetary Systems (Leisawitz et al.)
Lifting the Cosmic Veil on the Co-evolution of Black Holes and Galaxies: The Role of Far-Infrared Spectroscopy from Space (Armus et al.)
Direct Detection and Spectroscopy of Exo-Earths; The Need for High Angular Resolution and Other Observational Requirements (Shao et al.)
Understanding Habitability and Characterizing ExoEarths: The Role of Debris Disks (Roberge et al.)
Magnetospheric Emission from Extrasolar Planets (Lazio et al.)
Resolving water vapor in planet-forming disks (Hogerhiejde)
Discovering and Characterizing the Planetary Systems of Nearby Stars The scientific need for medium aperture space coronagraph observations (Greene et al.)
The Science Enabled By Ultrahigh Angular Resolution X-Ray And Gamma-Ray Imaging Of Black Holes (Gendreau et al.)
A complete view of galaxy evolution: panchromatic luminosity functions and the generation of metals (Blain et al.)
Astrometric Detection of Earthlike Planets (Shao et al.)
The Direct Approach to Finding Earth-Like Planets (Heap and Kuchner)

Operational Funding for Optical and Infrared Interferometers (Creech-Eakman and USIC)

Ground-based Optical/Infrared Interferometry: High Resolution, High Precision Imaging (Armstrong et al.)

From the titles and authors, it appears that 12 of the activity proposal papers emphasize or include optical interferometry from ground or space.

MOISAIC: Milliarcsecond Optical/Infrared Science: Access to Interferometry for the Community (Creech-Eakman and the USIC)

Towards the Intensity Interferometry Stellar Imaging System (Daniel et al.)