That is a great question. It is too early to tell but there will certainly be some changes.
1. I agree. People may choose more suburban or less dense locations. Also, BTR communities may be more in-demand given their lower density but similar amenity packages to a traditional garden-style apartment product. The flip side of the coin is many people will still want to be in walkable areas...especially the younger demographics and up-and-coming professionals. Too early to tell.
2. I'm in the camp that rent growth will soften. We've already looked at Yardi, CoStar, Greenstreet, Witten, etc. and have a general agreement with some of the data they've provided. Value-add will be difficult to execute in a flat rent environment. HOWEVER, the caveat is that not every industry or market is going to be impacted equally. Some areas will continue to see rental appreciation if their job market is less impacted. Again, too early to tell.
3. I do think larger floorplans might become more popular. Co-working and co-living may be impacted as people prefer to spread out a bit more. 2 Bed & 3 Bed floorplans should certainly be more attractive for folks looking to add a home office. I love how you're thinking about it.
I've actually seen A class collections remain very strong. You would have to assume that white-collar, work-from-home workers would be less impacted but that is not necessarily the case. Again, I think it is too early to tell which class will benefit most. In general, A seems to be holding up a bit better. We'll have to see some turnover to see if people downgrade their living quarters, etc. to see how the impacts play out. This also ignores the supply issue, concessions, higher marketing costs, or class A so it's not a cut and dry answer.
Lastly, consider the potential distress in office, retail, and hospitality assets and that PE funds and developers are foaming at the mouth to get a piece of the pie. I do think some slices of that market will be re-developed and re-purposed for housing. This may be another impact to supply in some markets...
Just some thoughts but a great topic and i look forward to hearing what others see on the horizon.