We have a situation now where the TAR is vastly overpowered, some weapons are a useless mess, and the assault rifle completely dominates.
This has been the case for weeks. Several patches have been deployed, most completely ignoring balance apart from a token vehicle HP balance, which broke things even more - free LAV spamfests are now even more frequent. Dropships were effectively nerfed.

'Working on it' and 'trying to get the right numbers' is not a valid excuse. Neither is waiting any longer to judge these things - the community are crying out about the TAR, matches are completely dominated by TAR users, weapons which were previously viable in Chromosome have been nerfed to hell.

How hard is it to nerf or buff a weapon a small amount each day? Implement the change, look at the effect it has on matches, change things further or leave as is. For example, cut some damage from the TAR, look at its usage, nerf again, buff slightly back, or leave as necessary.
Statistics are not sufficient for matches, and neither is simple internal testing. There was plenty of feedback during Chromosome, and in Uprising it's all been thrown out the window. Viziam LR overpowered? Cool, cut the damage on that variant, leave the others as is. Oh wait, instead, the laser rifle was nerfed to being a laughably ineffective weapon, and the TAR dominates it in every conceivable way.
Dropship WP rewards have been promised for months! There still isn't any reward for one of the most difficult and expensive classes to play - isk rewards are horrendously low to sustain that playstyle, and promised dropship price cuts have failed to materialize. ADS was a start, but it's ludicrously expensive and fragile.

This is a short list of things, but there are many, many more broken things. AV balance, for instance.

If things are left to stagnate like this further, then people are going to leave. Hell, people are leaving already.
It really can't be hard to patch such minor things as numbers. These aren't gameplay mechanics, these are things you've introduced that need tweaking.

Please, CCP, balance things! This isn't like EvE Online where you can take months to do it - you need to do it immediately. There's a nice weapon variety in the game, but noone can use the majority of them because they're not competitive!