He Did Not Have Total Freedom
The truth is that his plans were a bit restrained. In his mind, the column was going to be decorated lavishly to give the memorial even more grandeur. He wanted balconies to wrap around the pillar, as well as a terrace atop it. These would give visitors the chance to take a better look at this structure.
They Had To Simplify It
That was the vision. As we all know by now, it is hard to make everything you want into a reality. For one, the funding of the project was an important factor. There were also concerns about the final appearance of this pillar. They had no choice but to simplify his designs, which meant cutting out the balcony idea. Aside from that, they also had to remove the fine carvings on the surface of the pillar.