The single biggest problem for BJJ guys has always been the lack of takedown proficiency and takedown defense. The BJJ teams that have had the most success have been those like the old BTT that brought in wrestlers and got really good at wrestling. Ricardo Arona for example wasn't feared because of his BJJ per se, he was feared because he could take anyone down and beat the hell out of them (also, great leg kicks). Sperry, Bustamante, these guys were feared for their all around grappling game not their submissions and bottom games. So if you want to get really good at taking people down, staying on top, and beating them up until you can grab a sub go ahead, but recognize that that skill set is much more dependent upon good wrestling than anything unique to being good at BJJ. What BJJ gives you and has always given you is a good way to finish the fight quickly if given the opportunity and really good defense when in bad positions on the ground. That used to be enough by itself, it's not now. We all just have to deal with it.