is having Dl,Dr plus DML DMR in the same formation a good idea or a waste ?
no , it's a waste.
With that way (you also need 2 DC, ok?) your formation will be DL-DC-DC-DR-DML-DMR ...xMC - xAM -xST
So, you 'll have 6 players in defense and you 're gonna be still vulnerable vs a 4-4-2 ND for example.
Maybe the most tough in defense formation is 3DC-DML-DMC-DMR.

but I've been away from this forum for few months and I feel like it's not active like it was before
I hope you can contribute to that.
if you have any ideas, you can share here
http://forum.topeleven.com/top-eleve...requested.html