We removed the popcorn from the ceiling, painted, replaced cabinet fronts, and replaced the flooring with LVP throughout the whole space to give it a more modern feel.

Class B - No carpet, luxury vinyl plank, stainless appliances, paint agreeable gray w/ white ceilings, if current countertops are in bad shape, I replace with quartz, if cabinets are rough, I paint white, if bathroom mirrors have no frame, I miter cut door trim and attached with calk, ceiling fans in all BRs, W/D hookups, add deck if possible & cost effective, if flower beds around house, cover with pine needles, last contractor in is professional cleaner. 

For a long time I've used Behr 001 white for ceilings, swiss coffee semi for trim, and a light beige for walls...

It had too many walls, bathrooms too small, no open floor plan, etc.After digging online for the past six months we found a home that is 400 sq. ft. bigger, open floor plan, very nice floors, walls, ceilings, new roof and HVAC, 3 car garage, etc. .....

It has high ceilings and good wooden floors all throughout (4br / 2ba / 3,000 sqft).  

Nice tall ceilings for the summer heat.I don't see any HVAC on the roof--are there window units or sleeve units (???)

So it would be kind of like units, but with fencing around it instead of walls/ceilings?

Then another tenant (2nd floor) had a small leak & it dripped through the first floor unit ceiling.

Second, our tenants sign a lease addendum that specifies, among other things:1) I/WE UNDERSTAND AND AGREE THAT IT IS OUR CHOSEN RESPONSIBILITYTO MAINTAIN THE QUALITY AND INTEGRITY OF THE ABOVEMENTIONEDPROPERTY, AND THAT WE WILL PERFORM, OR CAUSE TO BE PERFORMED,THOSE MAINTENANCE TASKS WHICH INCLUDE, BUT ARE NOT LIMITED TO:KEEPING THE CARPETS AND FLOORS CLEAN AND UNCLUTTEREDREPLACING THE FURNACE FILTER AT LEAST EVERY THREE (3) MONTHSKEEPING WALLS AND CEILINGS FREE OF MARKS, STAINS, AND DAMAGEMAINTAINING A CLEAN, PEST-FREE INTERIORKEEPING ALL APPLIANCES CLEAN AND WELL-MAINTAINEDREPLACING THE BATTERIES IN SMOKE DETECTORS AND THERMOSTATSCLEANING GUTTERS AND DOWNSPOUTS AT LEAST EVERY SIX (6) MONTHS 2) I/WE UNDERSTAND AND AGREE THAT MANAGEMENT WILL CONDUCTSCHEDULED SAFETY INSPECTIONS OF THE PROPERTY TO ENSURE THATADEQUATE MAINTENANCE IS BEING PERFORMED AND I/WE AGREE TO FULLYCOOPERATE IN THE SCHEDULING AND PERFORMANCE OF THESE SAFETYINSPECTIONS.So, when it's Safety Inspection time, we just call up the tenant and schedule one.

As for discouraging sending requests, I wouldn't do that - the opposite of that is the tenant that tells you nothing until they day they are moving out and then mentions that a water leak caved in part of the ceiling.