If it’s not a fact, not a standard, and you don’t have authority on this matter, then it really is just your opinion.
There is no right or wrong; there is only what we like and dislike.
Personally, I don’t agree that the design of the Memorial has any unworkable problems, aside from the fact that the lack of thought for allowing candles to be lit for family members has seemed to make it a lot more difficult to ask for an exception to the “no candle” policy when discussing with Memorial management. To me, the land itself is what is important – I can easily co-exist with whatever Memorial is built there. But it’s no good to continue with the heavy-handed policies which severely limit individual expressiveness by everyone, including by family members. Hindering personal memorial activities in the name of the greater good for public memorial might be okay in 20 or 30 years. But for now, this place is a cemetery and that needs to be kept in mind by the folks who operate the physical structure surrounding it.
Translation: Good luck coming up with an original idea now that the bureaucratic meat grinder has pulverized any opportunity for individualistic expression.