1/72 (and 1/76) are very interesting for many reasons, I think. One reason is space, or lack of... Even dioramas with buildings and several vehicles are still 'manageable'. When you are using public transport to go to shows, having little models and therefore little boxes is better, WAY better. Also, display space is limited at home, and large scale models most often than not find themselves relegated in boxes in the loft...
Price can also be a reason, although I have to admit that a lot of braille scale kits are expensive, particularly if you venture into resin kits, but then a 1/35 resin kit by, say, Accurate Armour, is most often than not outside my 'budget'. However, even with little money, you can model masterpieces from the Revell range, and even from Italeri/ESCI's.
Choice is just about fantastic. Even only taking into account 'traditional' injected plastic kits, the choice is immense and still growing. Growing a lot. Add to that resin and metal kits, you can just about model anything that ever existed in those scales. Check the websites of companies such as Scale Link, Retromodels, SMA, Fine Scale Factory, SHQ, Millicast and MMS to nane but just a few!
Accessories and figures tended to be what let braille scale down, but things are changing and fast. Figures are now easy to find in resin and metal: again, check SHQ's website..! But also find out about MIG, Millicast, SMA's offerings. Tools and jerrycans, no problems anymore, Plenty to choose from. Decals, transfers, PE sets to update kits, PE sets for foliage, for balconies and gates to add to your dioramas: lots of them around now.
Good thing too, it's also easy to find other vehicles to put alongside your AFVs at those scales; there are many companies (Matador, Scale Link to name but two) who have tons of buses, coaches, civilian trucks and cars to complete great looking, realistic dioramas.
Just do it (as they say!)