One of the biggest cons is that above the tv is way too high for most people's optimal/comfortable viewing. There are several different opinions about the best height at which to view a tv, but generally when sitting you should be staring at the center of the screen or at the very highest at the bottom of the tv. Unless you have an unusually low-profile fireplace, watch tv standing or are like 6' 6" tall, a tv mounted above the fireplace is going to make for some uncomfortable viewing.

can you do search on previous discussions on the dilemma section of Houzz - you will see this often comes up. Bottom line, it is not a good idea as heat and a tv don't go well.

Could you post a picture?

Needing ideas on how to make this fireplace more modern and inviting? Just at our temp house till we can sell it? I like modern/Scandinavian style. Clearly it needs a clean first! And we will be putting down new carpet.