Sort of mixed at the moment. The gun play certainly feels different from BF3 in that there does not seem to be as much recoil as before, which in my mind is a shame. Aim assist needs to be nerfed, as every gun has become a laser like CoD.
Suppression has been nerfed to the point where it's almost non existent. Good or bad? Depends on the individual. I'd like it back to how it is in BF3. I am however, liking the number or different settings you can have on your vehicles. Gives you loads of options after you unlock them, same goes for the guns as well. You can play to your strengths more so with the number of attachments available.
Recon's seem to be around more than ever, I'm thinking this is partly because of the fact they have a portable soflam which makes spotting opponents from a relatively safe distance quite easy. It would be good if they could introduce a camo that negates this, as they can be a pain in the arse sometimes, I know I've done it
The maps have definitely been designed with the next gen consoles in mind with 64 player servers, although the infantry fighting in Conquest particularly, does seem to concentrate on certain flags. My favourite map by far is Zavod 311, least favourite is probably Flood Zone, but having said that I have only really played either Conquest or TDM on this map and they usually end up as massive camp fest with snipers slogging it out. It may play totally different in Rush, Obliteration or Domination.
I need to expand my game mode selections more, only having played mainly Conquest with some TDM and Dom thrown in. I've only played one match of Obliteration and a few Defuse (basically SnD) matches.
Proper 5 man squads could easily dominate a match in 12 v12 matches, but at the moment this doesn't happen too much for me, :(On the couple of occasions when everyone is singing from the same hymn sheet, the results against the opposition have been pretty comprehensive.
Weapons are pretty good so far, although I have barely touched the Support class so can't really comment on the LMG's. I like the fact that you can use Carbines across all classes when you unlock them, The AR's are probably still the best all round weapons to use, but Carbines and PDW's are pretty good also. I like the fact that Recon's get bolt actions from the outset. The only real issue with this is that it has promoted that class to the point that it gets extremely frustrating to have a team full of them and no flags being taken.
You do get the odd aggresive Recon, but not that many. I haven't used any DMR's yet so can't comment on those either, but they are availabel to all classes when unlocked as are the shotties. The unlocks for these are done via specific classes so it does sort of force you play as every class if you want to unlock certain weapon types. Engineers unlock Carbines, Supprot unlocks shotties and Recon unlocks DMR's.
Like I say, sort of mixed at the moment. It's not got me as hooked as BF3 did from the start. I'm thinking the next gen versions will play much better in many ways purely because of the numbers involved, the biggest issue I have is that I can't see me getting a PS4 for a little while yet.
Would I get it for the PS3 knowing what I know now? Probably yes, but with all the good stuff I'm hearing about Ghosts I'd be tempted to rent them both side by side and decide for yourself. If it was a PS4 based question, it would be hands down BF4, but then you would also have the option of Killzone. I loved KZ3, just nobody on my friends list played it so it was all solo, which again does diminish the experience on that game similarly to Battlefield.
Hope this helps.