Im playing on PVP server and i have a great PVE\PVP guild, we use to do PVE 16 man raids (4\4 HM EC) and constantly PVP as a 4-man team.
Since not all our member are mainly PVP-oriented we do not have an opportunity to run 8man RWZ.
So now as a rank 95+ full WH i basically have the following choice:
1. Ditch my guild and join PVP guild (we have only 2-3 competitive premades on republic side). No thank you
2. Play regular WZs with my guildies as we did pre 1.3 and hope that other guildies will eventually have enough intrerest in PVP and gear up their characters
I cannot say that 8man pre-season is a failure, but currently it is only available for a very limited percentage. Im running WHO-lvl 50 search regularly. We usually have 5-7 ranked people out of 100. So approximately 5-7% ever played RWZ, even less playing RWZ on a regular basis.
IMHO new 4-man maps could be very useful and allow the majority of players to take part in competition